665:, and lobbied for the legalisation of CB. In late 1977, having legalised Australian CB and allowed the import / sale of American and Japanese 23 channel sets, the Federal Government drafted new interim regulations for Australian 18 channel transceivers. The new RB249 regulations came into effect on January 1, 1978, and the last official registration date for 23 channel sets was January 31, 1978. After this date, use of unregistered 23 channel CB sets was deemed illegal and unlicensed sets were no longer eligible to be licensed. The 18 channel band plan used 16 channels of the 23 channel CB radios plus 2 extra channels at 27.095 and 27.195 MHz, to make up the 18 channels. The original channels 1, 2, 3, 4, 10, 21 and 23 were deleted from the 18 channel band plan. So channel 1 on an 18 channel was actually channel 5 on a 23 channel radio. These roughly corresponded to the present channels 5–22, except for the two unique frequencies that are known as 11A (Channel 7 on an 18 channel Australian CB) and 19A (Channel 16 on an 18 channel Australian CB) or remote control frequencies but are no longer part of the Australian 27 MHz CB band since 40 Channels were introduced. On January 1, 1982, the American 40 channel band plan was adopted.
1722:(SSB stations are authorized to use 12 watts, as opposed to 4 watts for AM stations) and to more easily locate other SSB stations. With the FCC authorization of 40 channels, SSB operation shifted to channels 36–40. Channel 36 (or 38 for LSB) became the unofficial SSB "calling channels" for stations seeking contacts, with the subsequent conversation moving to channels 37–40. CBers with AM-only radios are asked to not use channels 36 through 40. In return, SSB stations stay off the remaining 35 channels so they could be used by AM stations. This agreement provides interference-free operation for all operators by separating the far more powerful SSB stations from the AM stations. This solution also resolves the confusion created by the false advertising that SSB radios have 120 channels compared to only 40 for AM radios.
569:
authorized channels were increased to 40. The current specification is simply "4 watts output (AM) or 12 watts output (SSB)" as measured at the antenna connector on the back of the radio. The old specification was often used in false advertising by some manufacturers who would claim their CB radios had "5 watts" long after the specification had changed to 4 watts output. The older 23 channel radios built under the old specifications typically had an output of around 3.5 to 3.8 watts output when measured at the antenna connector. The FCC simply rounded up the old "5 watts DC input to the final amplifier stage" specification to the new "4 watts output as measured at the antenna connector on the back of the radio", resulting in a far simpler and easier specification.
47:
946:
1103:, and CB radio in the UK is now license-free. The old MPT 1320 27/81 band will continue to be available for the foreseeable future. On 27 June 2014, changes were made by Ofcom to allow the use of AM & SSB modes on CB in the UK legally for the first time. The rules regarding non-approved radios and power levels above 4 Watts on AM/FM and 12 Watts on SSB still apply, despite deregulation. Persons using illegal equipment or accessories still risk prosecution, fines or confiscation of equipment, although this is rarely enforced. AM and SSB on the freeband and amplifier use are common among enthusiasts.
2529:
Russia, it is channel 15 (in addition to traditional emergency channel 9 and truckers' channel 19), in Greece it is channel 13, in Italy it is channel 5, all AM. These frequencies may have evolved because tuned circuits (particularly antennas) work best in the middle of the band; the frequency for channel 19 (not channel 20) is the center of the 40 channel US band and other things being equal, signals will be transmitted and heard the farthest. Since less standardization exists in Europe, CB there is more associated with hobbyists than with truckers.
1096:. MPT 1320 also restricted antennas to a maximum length of 1.5 meters (5'), with base loading being the only type permitted for 27 MHz operation. Over the next several years antenna regulations were relaxed, with antenna length increasing to 1.65 meters (5'5") and centre- or top-loading of the main radiating element permitted. On 1 September 1987 the UK added the usual 40 frequencies (26.965–27.405 MHz) used worldwide, for a total of 80 channels at 27 MHz; antenna regulations were further relaxed, and the 934 MHz band was withdrawn in 1998.
577:
channel 11 was reserved as a calling frequency (for the purpose of establishing communications); however, this was withdrawn in 1977. During this early period, many CB radios had "inter-station" channels colored on their dials, while the other channels were clear or normally colored. It was common for a town to adopt an inter-station channel as its "home" channel. This helped prevent overcrowding on channel 11, enabling a CBer to monitor a town's home channel to contact another CBer from that town instead of a making a general call on channel 11.
2801:(from late spring through mid-summer). Skip contributes to noise on CB frequencies. In the United States, it is no longer illegal to engage in (or attempt to engage in) CB communications with any station more than 250 km (160 mi) from an operator's location. This restriction used to exist to keep CB as a local (line-of-sight) radio service; however, in the United States the restriction has been dropped. The legality of shooting skip is not an issue in most other countries. A recent FCC decision now allows shooting skip in the United States.
1726:
Reality is far different: Attempting an SSB conversation while an AM conversation is in progress results in jammed communications for everyone. In general, each channel can only support one AM conversation and no others; if no AM conversation is in progress, two SSB conversations can share one channel without interference if one is in LSB and the other in USB mode. For a particular conversation, everyone must be tuned to the same channel and same mode in order to talk with each other. Starting in
October 2021 the FCC has approved FM for CB in the US.
1813:
fishery radio services and these frequencies are heavily used for marine communications. Japan's "double side band fishery radio" or "DSB Fishery Radio
Service" covers 26.760 MHz-26.944 MHz, 27.016 MHz, and 27.524-27.988 MHz. However, frequencies such as 27.005 MHz AM are widely pirated in Japan with very high power transmitters. This causes interference to the authorized low-power 1 Watt DSB (1 Watt AM) fishery radio service. Instead of 26–27 MHz, Japan has authorized several UHF FM CB-type
792:
Australia. After peaking in the 1970s and early 1980s, the use of 27 MHz CB in
Australia has fallen dramatically due to the introduction of 477 MHz UHF CB (with FM and repeaters) and the proliferation of cheap, compact handheld UHF transceivers. Technology such as mobile telephones and the internet have provided people with other choices for communications. The Australian government has changed the allocation of channels available for UHF CB Radio from 40 to 80, and doubled the number of repeater channels from 8 to 16.
1763:, the channels are shifted 5 kHz down; for example, channel 30 is 27.300 MHz. Many operators add a switch to change between the "zeroes" (the Russian/Polish channel assignment) and the "fives" (the international/European assignment). Most contemporary radios built for those markets can do "fives" as well as "zeroes" out of the box. Since roughly 2005–2006, Russia and Poland have adopted use of the standard US channel offset as well as the older channel plan, for two overlapping "grids" of channels.
2572:
10 meter operation. Lax enforcement enables manufacturers of illegal linear amplifiers to openly advertise their products; many CB dealers include these amplifiers in their catalogs. Due to their rampant, unchecked use of linear amplifiers, American CB Radio operators are often referred to as "Alligators", by operators in other countries (suggesting
American operators are "All Mouth and No Ears"). Attempts by law-abiding CB users to increase regulatory oversight have been ineffective.
1027:
26.9650 MHz to 27.4050 MHz (40 channels), power output is 4 watts for AM and FM and 12 watts PEP for SSB. Channel 9 is reserved for emergencies, and channel 11 is a calling channel. On UHF 477 MHz, citizens band PRS radio devices are allowed 5 watts power output on FM on 39 assigned channels spaced at 12.5 kHz intervals from 477.0125 to 477.4875 MHz. Channel 9 is reserved for emergencies, and channel 11 for calling. A short-range
669:
200,000 licences were issued (Australia's
Population in 1978 was 14.36 million). The regulations called for one licence per CB radio. The price for a licence in 1977 was AU$ 25 per year (In mid 1977 the Australian Dollar exchange rate was AU$ 0.90 to US$ 1.00), a not insubstantial amount for the average Australian wage-earner. Australian CB radio uses AM, USB, and LSB modes (no FM) on 27 MHz, allowed output power being 4 Watts AM and 12 Watts SSB. When
31:
512:
2722:
2460:, like New Zealand and the UK, permits the use of two HF CB bands. South Africa has a 23 channel AM / SSB 29 MHz CB allocation (called "29 Megs" or "29 MHz CB") from 29.710 to 29.985 MHz in 12.5 kHz steps. South Africa also permits use of standard CB channels 19–27 (27.185–27.275 MHz) with AM / SSB permitted. Many radios sold in South Africa feature both the 27 MHz and 29 MHz bands. A license from
1073:"Convoy GB" in 1976 (both of which were Top 5 hits). By 1980, CB radio was becoming a popular pastime in Britain; as late as the summer of 1981 the British government was still saying that CB would never be legalized on 27 MHz, proposing a UHF service around 860 MHz called "Open Channel" instead. However, in November 1981 (after high-profile public demonstrations) 40 frequencies unique to the UK, known as the
55:
213:(FCC). These services began in 1945 to permit citizens a radio band for personal communication (e.g., radio-controlled model airplanes and family and business communications). In 1948, the original CB radios were designed for operation on the 460–470 MHz UHF band. There were two classes of CB radio: "A" and "B". Class B radios had simpler technical requirements, and were limited to a smaller frequency range.
5614:
1655:
5624:
2818:", which may disrupt other communications and make the unapproved equipment obvious to regulators. Freebanding is done with modified CB or amateur equipment, foreign CB radios which may offer different channels, or with radios intended for export. Legal operation in one country may be illegal in another; for example, in the UK until June 2014 only 80 FM channels were legal.
2891:, to an operator with whom they have communicated via radio. Callbooks have evolved to include online databases that are accessible via the Internet to instantly obtain the address of another amateur radio operator and their QSL managers. The most well known and used on-line QSL database for the 11 meter / freebander community is QRZ11.COM, designed after its "big brother"
5603:
1744:(CEPT) adopted the North American channel assignments, except channel 23, frequency 27.235 MHz; channel 24, frequency 27.245 MHz; and channel 25, frequency 27.255 MHz. However, legal CB equipment sold in Europe does follow the North American channel designation. Some member countries permit additional modes and frequencies; for example,
202:
5634:
1006:. The Indonesian government legalized CB on 6 October 1980 with a decision by the Minister of Communications, the "Ministerial Decree on the Licensing for the Operation of Inter-Citizens Radio Communication". Because many people were already using 40 channel radios prior to legalization, the American band plan (with AM and SSB) was adopted; a
1718:(SSB) operation involves the selection of either the Lower Side Band (LSB) or the Upper Side Band (USB) mode for transmit and receive. SSB radios also have the standard AM mode for communicating with standard CB radio models. With the original 23 CB channels SSB stations commonly used channel 16, to avoid interference to those using
2822:
selector that shifts all 40 channels above or below the band and a "+10 kHz" button to reach the model control "A" channels. These radios may have 6 or even 12 bands, establishing a set of quasi-CB channels on many unauthorized frequencies. The bands are typically lettered A through F, with the normal citizens band as D.
1135:(SSB), often vary from country to country; use of foreign equipment may be illegal. However, many countries have adopted the American channels and their associated frequencies, which is generally in AM mode except some higher channels which are sometimes in SSB mode. In September 2021 the FCC approved the use of FM on CB radio.
224:(UHF) radios, at the time, were neither practical nor affordable for the average consumer. On September 11, 1958 CB service class D was created on 27 MHz, and this band became what is commonly known today as "Citizens Band". Only 23 channels were available at the time; the first 22 were taken from the former
623:
Business users (such as tow-truck operators, plumbers, and electricians) moved to the VHF and UHF business band frequencies. The business band requires an FCC license, and usually results in an assignment to a single frequency. The advantages of fewer users sharing a frequency, greater authorized output power, clarity of
557:
that contained a crystal for each of the 23 channels, two extra slots existed, and one could order the 22A & 22B crystals for an easy plug-in. Channel 9 was officially reserved for emergency use by the FCC in 1969. Channel 10 was originally often used for highway travel communications east of the
2871:
than
Amateur Radio transceivers. It is also illegal to use these radios outside of the Amateur Radio bands by anyone in the US, since they are not type-certified for other radio services and usually exceed authorized power limits. The use of these radios within the Amateur Radio Service by a licensed
2842:
was modified for CB by replacing a set of crystals used to tune portions of the 10 meter band, although some variants of the FT-101 were sold with the US FCC channels standard and were capable of transmitting above and below the legal 40 channels by another 10 or more channels. On some
2511:
CB was the only practical two‑way radio system for the individual consumer, and served several subsets of users such as truck drivers, radio hobbyists, and those in need of short‑range radio communications, such as electricians, plumbers, and carpenters, who needed to communicate between job site and
1122:
CB radio is not a worldwide, standardized radio service. Each country decides if it wants to authorize such a radio service from its domestic frequency authorizations, and what its standards will be; however, similar radio services exist in many countries. Frequencies, power levels and modes (such as
966:
officially calls the CB band the "General Radio
Service," though regulations also note that this service is commonly called "CB". Canada's GRS uses the identical frequencies and modes as the United States citizens band, and no special provisions are required for either Canadians or Americans using CB
791:
radios in 1977, many operators used both UHF and HF radios and formed groups to own and operate local FM repeaters. Members of the CBTCC formed what became known as
Australian Citizens Radio Movement (ACRM) in the early 1970s; this organization became the voice for legalization of CB radio throughout
779:. Other Australian cities which became CB radio "hotspots" were Seymour, Benalla, Holbrook and Gundagai, all located on the busy Hume Highway between Melbourne and Sydney. Other regional cities such as Bendigo, Mildura, Mount Gambier and Port Augusta, developed lively, colourful CB radio communities.
660:
Before CB was authorized in
Australia, hand-held 27-MHz "walkie-talkies" were available, which used several frequencies between the present CB channels, such as 27.240 MHz. By the mid-1970s, hobbyists were experimenting with handheld radios and unauthorized 23 channel American CB radios. At
2742:
Many truckers use two co-phased antennas, mounted on their outside mirrors. Such an array is intended to enhance performance to the front and back, while reducing it to the sides (a desirable pattern for long-haul truckers). To achieve this effect, the antennas must be separated by about eight feet,
2604:
receivers. With the earliest sets two quartz crystals were needed for transmitting and receiving on each channel, which was costly. By the mid-1960s "mixer" circuits made frequency-synthesized radios possible, which reduced cost and allowed full coverage of all 23 channels with a smaller number
673:
was first legalised the 27 MHz CB Band was intended to be closed to
Australian CBers in 1982 and only the 477 MHz UHF band was to continue, however this did not eventuate. The first 477 MHz CB radio in 1977 was designed and made in Australia by Philips TMC and was a 40 channel CB
2831:
band. Voice transmissions in a Morse code-only segment are easily detectable by authorities. Amateur Radio Service operators record, locate, and report to the FCC frequency trespassing and intrusions of their frequency allocations by pirate transmissions or illegal operators for enforcement action.
2758:
Base CB antennas may be vertical for omnidirectional coverage, or directional "beam" antennas may be used to direct communications to a particular region. Ground-plane kits exist as mounting bases for mobile whips, and have several wire terminals or hardwired ground radials attached. These kits are
2733:
27 MHz is a relatively long wavelength for mobile communications, and the choice of antenna has a considerable impact on the performance of a CB radio. A common mobile antenna is a quarter-wave vertical whip. This is roughly 9 feet (2.7 m) tall; it is mounted low on the vehicle body,
2528:
CB is still commonly used by long-haul truck drivers to communicate directions, traffic problems and other relevant matters. The unofficial "travelers channel" in most of the world is channel 19; in Australia it is channel 8 (27.055 MHz) and UHF channel 40 (477.400 MHz). In
1550:
When looking at the FCC/CEPT channel list there are some channels with a spacing of 20 kHz instead of the regular 10 kHz step. These intermediate frequencies are reserved for the Radio Control Radio Service (RCRS). The RCRS service is commonly used for remote control of model aircraft and
1031:
radio communications service for recreational use is from 477.5250 to 477.9875 MHz FM mode with 38 channels and a power output of 500 mW. A CB radio or Personal Radio Service Device under Class Assignment does not need an individual license to operate in Malaysia if it adheres to the
2830:
or a frequency display — two different components, providing an identical result. Illegal operations may unintentionally end up on frequencies very much in use. For instance, channel 19 shifted two bands up is 28.085 MHz, which is in a Morse code / data-only part of the 10 meter ham
2495:
Using radios outside their intended market can be dangerous, as well as illegal, as frequencies used by Citizen's Band radios from other countries may operate on frequencies close to, or be used by, emergency services (for example, the Indonesian service around 142 MHz operates on frequencies
1766:
Russia uses an alphanumeric designation for their CB channel plans, because several "grids" or "bands" of 40 channels each are used, along with both AM and FM mode. Russian CB allocations follow the CB band 26.965–27.405 MHz (designated as band C), as well as 26.515–26.955 MHz
1026:
In Malaysia, citizens band radios became legal when the "Notification of Issuance Of Class Assignments" by Communication and Multimedia Malaysia was published on 1 April 2000. Under this class assignment, a CB radio is classified as a "Personal Radio Service device". The frequency band is HF,
638:
With these factors in play, CB radio has once again gained popularity in recent years, an uptick not seen since the 90's. Manufacturers report an increase in sales, while social media sites like YouTube show a growing popularity in CB radio content, mainly as a hobby. The technology has also given
2825:
For example, a freebander with an export radio who wants to use 27.635 MHz would choose channel 19 (27.185 MHz) and then shift the radio up one band (+450 kHz). It requires arithmetic on the part of the operator to determine the actual frequency, although more expensive radios
2821:
Unlike amateur radios with continuous frequency tuning, CBs manufactured for export are channelized. Frequency selection resembles that of modified American CBs more than any foreign frequency plan. They typically have a knob and display that reads up to channel 40, but include an extra band
2571:
During the 1970s, the FCC banned the sale of linear amplifiers capable of operation from 24 to 35 MHz to discourage their use on the CB band, although the use of high‑power amplifiers continued. Late in 2006, the FCC amended the regulation to exclude only 26–28 MHz to facilitate amateur
668:
From the outset, the government attempted to regulate CB radio with license fees and call signs, but eventually they abandoned this approach. Enthusiasts rushed for licences when the doors opened at post offices around Australia in mid-1977 and by the end of the first quarter of 1978 an estimated
556:
Originally, the U.S. had 23 CB channels; the 40 channel band plan was implemented in 1977. Two more channels between 22 & 23, commonly referred to as 22A & 22B, were available. Several people had 22A, but few had 22B. In the early 1970s Radio Shack sold a "base station" CB radio
1725:
While a SSB radio has three possible "modes" (AM, LSB, USB) it can operate in, operation is still limited to the same 40 channels. Some manufacturers tried to sell more radios by claiming that with three different modes possible for each channel, it was the equivalent to 120 channels.
164:
CB radios using an omni-directional vertical antenna typically have a range of about 5 km to 30 km depending on terrain, for line of sight communication; however, various radio propagation conditions may intermittently allow communication over much greater distances. Base stations however may be
622:
is a factor at these frequencies. In addition, CB may have become a victim of its own popularity; with millions of users on a finite number of frequencies during the mid-to-late 1970s and early 1980s, channels often were noisy and communication difficult, which reduced interest among hobbyists.
1812:
Japan's CB allocation consists of 8 voice and 2 radio control channels with a maximum power output of 500 mW. AM mode is the only mode permitted and antennas must be non-removable and less than 199 cm (78 inches) long. In Japan, the 26–28 MHz range is allocated to
311:
in addition to a purchased license ($ 20 in the early 1970s, reduced to $ 4 on March 1, 1975); however, when the CB craze was at its peak many people ignored the requirement and invented their own nicknames (known as "handles"). Lax enforcement of the rules on authorized use of CB radio led to
2754:
load to the radio, and are often used on fiberglass vehicles such as snowmobiles or boats. They are also useful in base stations where circumstances preclude the use of a ground-plane antenna. Handheld CBs may use either a telescoping center-loaded whip or a continuously loaded "rubber ducky"
568:
The original FCC output power limitation for CB radios was "5 watts DC input to the final amplifier stage", which was a reference to the earlier radios equipped with tubes. With solid state radios becoming more common in the 1970s, the FCC revised this specification at the same time the
172:
Multiple countries have created similar radio services, with varying technical standards and requirements for licensing. While they may be known by other names, such as the General Radio Service in Canada, they often use similar frequencies (26–28 MHz) and have similar uses, and similar
228:
11-meter band, and channel 23 was shared with radio-controlled devices. Some hobbyists continue to use the designation "11 meters" to refer to the Citizens Band and adjoining frequencies. Part 95 of the Code of Federal Regulations regulates the class D CB service, on the
576:
radio service. Until 1975, only channels 9–14 and 23 could be used for "interstation" calls (to other licensees). Channels 1–8 and 15–22 were reserved for "intrastation" communications (among units with the same license). After the inter-station/intra-station rule was dropped,
120:
Like many other land mobile radio services, multiple radios in a local area share a single frequency channel, but only one can transmit at a time. The radio is normally in receive mode to receive transmissions of other radios on the channel; when users want to communicate they press a
217:
established the Citizens Radio Corporation during the late 1940s to manufacture class B handhelds for the general public. Originally designed for use by the public sector, the Citizens Radio Corporation sold over 100,000 units, primarily to farmers and the US Coast Guard.
2516:
in many countries. The 27 MHz frequencies used by CB, which require a relatively long aerial and tend to propagate poorly indoors, discourage the use of handheld radios. Many users of handheld radios (families, hunters and hikers) have moved on to 49 MHz and the UHF
1767:(designated as band B) and 27.415–27.855 MHz (designated as band D). Some radios refer to the "mid band" (standard CB band) as "band D" which shifts the letters up one (making 26.515–26.955 MHz "band C" and 27.415–27.855 MHz "band E".
2814:) seem quiet and under-utilized, they are allocated to other radio services (including government agencies) and unauthorized operation on them is illegal. Furthermore, illegal transmitters and amplifiers may not meet good engineering practice for harmonic distortion or "
1770:
For the convenience of users of the grid were marked by letters. Classic is considered the marking when the main range is designated letter "C". The most common description of the channel is considered to be similar to the following: (C9FM or C9EFM or C9EF or 9EF).
2855:
trade in imported CB gear exists in many countries. In some instances, the sale or ownership of foreign-specification CB gear is not illegal but its use is. With the FCC's minimal enforcement of its CB rules, enthusiasts in the US use "export radios" or European
589:
was still expensive, many boaters installed CB radios. Business caught on to this market, and introduced marine CBs containing a weather band (WX). There was much controversy over whether the Coast Guard should monitor CB radio, but for safety they did so, using
2847:
mobile radios. In the United States, the FCC bans the importation and marketing of radios it deems easily modifiable for CB; it is illegal to transmit on CB frequencies with a ham radio except in emergencies where no other method of communication is available.
300:, and to organize blockades and convoys in a 1974 strike protesting the new speed limit and other trucking regulations. The radios were crucial for independent truckers; many were paid by the mile, and the 55 mph speed limit lowered their productivity.
642:
The FCC restricts channel 9 to emergency communications and roadside assistance. Most highway travelers monitor channel 19. Truck drivers still use CB, which is an effective means of obtaining information about road construction, accidents and
810:. 27 MHz radios have the advantage of not requiring a certificate of proficiency to use, however they may not be monitored by rescue organisations or larger vessels. VHF radios are recommended by state agencies, such as Marine Safety Victoria and
1794:
The 25–30 MHz band (including the CB allocations and frequencies above and below the 26.5–27.860 MHz band) is heavily used for taxi cab and other mobile two-way communications systems in Russia, Ukraine and other former USSR country states.
1068:
In the UK, a small but growing number of people were illegally using American CB radios during the late 1970s and early 1980s. The prominence of CB radio grew in Britain partly due to the success of novelty songs like C.W. McCall's "Convoy" and
2503:, up to present time, the use of 27 MHz CB is still banned since the Marcos regime banned it in 1980s. Before it was banned, they use the same allocation as the US. A few operators still illegally utilize the 40 CB channels.
2544:
mean that only the worst offenders are sanctioned, which makes legitimate operation on the citizens band unreliable. Most offenders are not caught for interfering with other CB users; often, their self‑modified equipment generates
986:, CB radios were first introduced about 1977 when some transceivers were imported illegally from Australia, Japan and the United States. The dates are hard to confirm accurately, but early use was known around large cities such as
2789:
propagation, and the operator is said to be "shooting skip". CB operators have communicated across thousands of miles and sometimes around the world. Even low-power 27 MHz signals can sometimes propagate over long distances.
661:
that time in Australia, licensed ham operators and Emergency Services still used the 11 meter band which was not yet available for CB use. Multiple CB clubs had formed by this time, which assigned call signs to members, exchanged
2809:
Operation on frequencies above or below the citizens band (on the "uppers" or "lowers") is called "freebanding" or "outbanding". While frequencies just below the CB segment (or between the CB segment and the amateur radio
2532:
Legal (short‑range) use of CB radio is sometimes impeded by users of illegal high‑power transmitters, which can be heard hundreds of miles away. The other problem with short‑range CB use is propagation; during long‑range
2650:
RF gain: Adjusts the RF amplifier gain of the receiver; used to reduce received background noise, and to reduce "clipping" due to over-amplification of already-strong signals (for example, when the receiver is near the
3034:
2843:
newer radios, the modification may be as simple as disconnecting a jumper wire or a diode. Many types of amateur transceivers may be found on CB and freeband, ranging from full-coverage HF transceivers to simpler
1741:
1152:
365:(debuted in 1977) helped cement CB radio's status as a nationwide craze in the United States over the mid- to late-1970s. The phenomenon also inspired several popular and country music songs in 1975 and 1976:
2880:
A callbook is a directory of radio station call signs. Originally a bound book that resembled a telephone directory, it contains the name and addresses of radio stations in a given jurisdiction (country).
6066:
2738:
to make the antenna impedance the same as a physically longer antenna. The loading coil may be on the bottom, middle, or top of the antenna, while some antennas are wound in a continuously loaded helix.
3728:
2491:
are allowed on channels 18 and 23 . Paging is permitted on channel 1 (26.965 MHz) and channel 80 (26.955 MHz) is the recommended call channel for Czech CB radio operators.
974:. American CB licensees were initially required to apply for a temporary license to operate in Canada. In April 1977, the service was expanded to the same 40 channels as the American service.
1107:
is legal in the UK, although not widely used. Internet gateway stations are also beginning to appear; although illegal on 27 MHz, these units are connected to other CB stations around the world.
1038:
On 1 April 2010 the MCMC (Malaysian Communications and Multimedia Commission) released a new regulation and later on 2017. This includes a new UHF PMR 446 MHz allocation: an eight-channel
4052:
1752:
has an additional 40 channels between 27.60125 and 27.99125 MHz, also making 80 channels in total. Before CEPT, most member countries used a subset of the 40 U.S. channels.
963:
1088:
The maximum power allowable on the MPT 1320 27/81 system was 4 watts (in common with the American system), although initially radios were equipped to reduce output power by 10
1541:* Channels 3, 7, 11, 15, and 19 have adjacent "hidden" channels (see below); channels 23, 24, and 25 are numbered out-of-order for their frequency allocations in the United States.
1110:
Although the use of CB radios in the UK is limited they are still in use, especially with the farming community, truckers, off-roaders and mini-cab services. The widely used channel for the
1042:
Personal Mobile Radio 446 MHz (Analog PMR446) with frequencies from 446.00625 to 446.09375 MHz (12.5 kHz spacing) FM with 0.5 watt power output, and 16 channels for
264:
electronics allowed the weight, size, and cost of the radios to fall, giving the public access to a communications medium previously only available to specialists. CB clubs were formed; a
4338:
1809:
in addition to the "standard" 40 channel 26.965–27.405 MHz frequency plan for a total of 80 HF CB channels. New Zealand has adopted the Australian UHF CB System as well.
1778:
the first letter («C») is indicated by a grid that contains a set of 40 channels. If the first letter is not specified, it is considered that it is («C»). For example, (C9EF, 9EF)
3088:
Telecommunications, Government of Canada, Innovation, Science and Economic Development Canada, Office of the Deputy Minister, Spectrum, Information Technologies and (27 August 2002).
229:
27 MHz band, since the 1970s and continuing today. Most of the 460–470 MHz band was reassigned for business and public-safety use; CB Class A is the forerunner of the
2759:
designed to have a mobile whip screwed on top (a full-length, quarter-wave steel whip is preferred) and mounted on a mast. The ground radials replace the vehicle body (which is the
2797:
activity, the band can remain open to much of the world for long periods of time. During low sunspot activity it may be impossible to use skywave at all, except during periods of
6059:
173:
technical standards. Although licenses may be required, eligibility is generally simple. Some countries also have personal radio services in the UHF band, such as the European
4022:
2734:
and often has a spring-and-ball mount to enhance its flexibility when scraping or striking overhead objects. Where a nine-foot whip is undesirable, shorter antennas include
3676:
3830:
2887:
published the first callbook in the United States in 1909. Today, the primary purpose of a callbook is to allow radio operators to send a confirmation post card, called a
2476:
authorizes a similar allocation, with 40 channels from 26.965 to 27.405 MHz and another 40 channels from 26.565 to 26.955 MHz in regular 10-kHz steps.
4104:
2592:
hand-held units became affordable with the use of transistors. Early receivers did not cover all the channels of the service; channels were controlled by plug-in quartz
1050:
in 4FSK mode and a power output of 0.5 watt. An unofficial citizens band radio club in Malaysia is the "Malaysia Boleh Citizen Radio Group", known as "Mike Bravo" (
3119:
1014:
channel plan at 476-477 MHz On 10 November 1980, the Indonesian Directorate General of Posts and Telecommunications issued another decree establishing RAPI (
565:
problems with channel 9. Many CBers called channel 19 "the trucker's channel". The FCC originally restricted channel 11 for use as the calling channel.
249:
at the time) which was opposed by amateur radio organizations and others. There are several other classes of personal radio services for specialized purposes (such as
3279:
6052:
3896:
2556:
The maximum legal CB power output level in the U.S. is 4 watts for AM (un-modulated carrier; modulation can be four times the carrier power, or 16 watts
1111:
4414:
2903:
During the 1970s and 1980s peak years of CB radio, many citizens band-themed magazines appeared on newsstands. Two magazines that dominated the time period were
771:), since "CB" could not be used. After July 1, 1977, the club changed its name to Citizens Band Two Way Communication Club (CBTCC). Other early clubs were "LV" (
2921:, which had the same editor under a different publisher beginning in 1982. It covered hobby radio as well as CB. The same publisher produced a magazine called
3216:
594:
base stations at their search and rescue stations. The Coast Guard stopped this practice in the late 1980s and recommends VHF Marine Band radios for boaters.
5586:
5558:
5553:
4578:
1114:
is channel 11. The normal calling and truckers' channel is channel 19, although many truck organisations and groups use other channels to avoid abuse.
6085:
7171:
7148:
4463:
4363:
4044:
1805:
have unique allocations compared to any other country. New Zealand authorizes use of their New Zealand specific 40 channel 26.330–26.770 MHz
1092:(to 0.4 watts) if the antenna was mounted more than 7 meters (23') above ground level. The power-reduction switch is also useful in reducing
3855:
970:
The General Radio Service was authorized in 1962. Initially, CB channels 1–3 remained allocated to amateur radio and channel 23 was used by
545:
area in one of his many voice characters. He appeared in an interview (with clips having fun talking to children on his home CB radio station) in the
7122:
1046:
Personal Mobile Radio 446 MHz (Digital PMR 446). Frequencies for Digital PMR 446 are from 446.103125 to 446.196875 MHz with 6.25 kHz
572:
Initially, the FCC intended for CB to be the "poor man's business-band radio", and CB regulations were structured similarly to those regulating the
452:
1077:
using FM were allocated at 27 MHz plus 20 channels on 934 MHz (934.0125–934.9625 MHz with 50 kHz spacing). CB's inventor,
5670:
2838:
modified to transmit out of band, which is illegal in some countries. Older amateur radios may require component changes; for instance, the 1970s
7452:
7138:
6075:
5580:
4331:
4249:
422:
3097:
7181:
7143:
6564:
6559:
5575:
5565:
5545:
5347:
4545:
3137:
1784:
behind it – an optional designation («E») for "European" or mandatory («R») for "Russian" size frequency nets. For example, (C9EF, C9F, C9RF)
34:
Typical 1980s CB radio intended for use at a fixed location and used with outdoor antenna. "Base stations" are usually operated on household
5910:
1676:
561:, and channel 19 west of the Mississippi; channel 19 then became the preferred highway channel in most areas, as it did not have
4442:
6113:
5920:
5570:
5416:
3466:
316:
height, distance communications, licensing, call signs, and transmitter power). Individual licensing came to an end on April 28, 1983.
303:
Their use spread further into the general population in the US in the middle of the 1970s. Originally, CB (named Citizens Radio by the
7281:
5342:
3647:
2483:
authorizes 80 channels as well (same as the German 80-channel plan). As in Germany, digital modes are allowed on certain frequencies.
1043:
4111:
3952:
1781:
hereinafter ("9") – the channel number. Sometimes less than 10 channels are designated 2 digits. For example, (C9EF, C09EF)
1551:
boats. It is an unofficial practice to name these channels by their next lower standard channel number along with a suffix "A" (
7402:
5973:
5781:
5436:
4141:
3819:
3424:
3175:
2872:
Amateur Radio operator within his / her license privileges is legal, as long as all FCC regulations for Amateur Radio are followed.
2541:
2521:; those needing a simple radio for professional use (e.g., tradesmen) have moved on to "dot-color" Business Band radios and the VHF
1702:
1171:
1144:
304:
210:
7417:
4015:
3337:
3324:
4157:
7505:
5221:
4769:
4571:
2961:
387:
in January 1976, to #2 in the UK Charts during the spring of 1976, and inspiring the 1978 film of the same name. In the UK,
3532:
3488:
6422:
6123:
5332:
3386:
523:
2600:
receivers (using one or two conversion stages) were the norm in good-quality equipment, although low-cost toy-type units used
46:
7601:
7533:
7158:
7153:
7127:
5327:
4878:
3990:
3769:
1680:
1063:
245:. An unsuccessful petition was filed in 1973 to create a CB Class E service at 220 MHz, (part of the amateur radio
6103:
4191:
319:
The increased use of CB radios in 1970s had made its way into films, television, and music by the late 1970s. Films such as
117:
radio). In many countries, CB operation does not require a license and may be used for business or personal communications.
3444:
209:
The citizens band radio service originated in the United States as one of several personal radio services regulated by the
5890:
5352:
1163:
945:
562:
191:
5637:
7596:
7447:
6879:
6803:
6696:
6371:
6339:
6108:
6089:
5771:
5718:
5627:
5388:
5285:
4828:
4595:
4477:
3889:
2982:
2760:
2484:
1093:
494:
333:
230:
98:
4309:
4214:
7382:
7377:
6943:
6285:
6133:
5786:
5663:
5617:
5124:
4564:
4511:
4407:
3305:
4082:
2867:
Amateur Radio transceivers. Marketing, import and sale of such radios is illegal if they are distributed as anything
1860:
has the usual 40 channels at 27 MHz, plus a unique 60-channel allocation from 142.050 to 143.525 MHz.
507:'s "C.B. Savage", a gay-themed country novelty song about truckers plagued by a mysterious effeminate CB aficionado.
7616:
7437:
7288:
6760:
5978:
5476:
5398:
5337:
5044:
4279:
2743:
only practical on large trucks. Two antennas may be installed for symmetrical appearance, with only one connected.
2706:
2614:
2605:
of crystals (typically 14). The next improvement came during the mid-1970s; crystal synthesis was replaced by
2561:
1715:
1132:
289:
158:
125:" button on their radio, which turns on their transmitter. Users on a channel must take turns transmitting. In the
3220:
6988:
6745:
6739:
6230:
6208:
6128:
6003:
5834:
5796:
5248:
5209:
5054:
4954:
4883:
4816:
4643:
4016:"Arrêté du 31 mars 1992 relatif aux caractéristiques techniques et aux conditions d'exploitation des postes C.B."
3550:
3265:
455:" is a sequel to "Convoy", recorded by C.W. McCall. It was released in late spring 1976, and peaked at #1 in the
261:
7519:
7260:
7106:
7050:
6968:
6797:
6722:
6616:
6028:
5844:
5607:
4849:
4784:
4737:
4623:
2665:
1665:
70:
7348:
2647:: Some transceivers can drive an external speaker and act as a low-power public address system, or "bullhorn".
1868:
348:
2638:
2609:
technology using ICs, enabling 40 channel sets with only one crystal (10.240 MHz). Almost all were
7392:
7302:
6830:
6389:
5988:
5738:
5446:
5431:
5275:
5226:
5149:
5049:
4727:
4613:
4608:
2522:
1684:
1669:
1074:
644:
238:
102:
42:
system if operated in a vehicle or from an emergency battery source. Shown with Astatic brand D-104 desk mic
3864:
7611:
7477:
7372:
7267:
7096:
7045:
6656:
6574:
6191:
5698:
5656:
5368:
5154:
4969:
4914:
4909:
4722:
4687:
3929:
2917:
2798:
1814:
1735:
1007:
776:
491:
lyrics are capitalizing on the fad. The record peaked at #94 in Billboard's Hot 100 in the spring of 1976.
114:
90:
73:, a system allowing short-distance one-to-many bidirectional voice communication among individuals, using
3015:
The terms "interstation" and "intrastation" appear in the FCC's Part 95 rules from that time period.
7412:
7204:
7197:
7015:
6874:
6787:
6681:
6549:
6301:
6251:
6219:
5733:
5270:
5074:
5039:
4959:
4939:
4861:
4749:
4670:
2644:
1028:
806:
Source: Several channels are allocated for maritime use in Australia. Australia also permits the use of
438:
321:
225:
2470:
allows use of the "low channels" for a total of 80 channels (26.515 MHz to 27.405 MHz).
416:
256:
During the 1960s, the service was used by small businesses (e.g., electricians, plumbers, carpenters),
3801:
3603:
3133:
775:) and "WB" (named after Wayne Britain). Members of these clubs are still active, and have also become
7555:
7442:
7246:
6953:
6671:
6498:
6378:
6311:
5998:
5849:
5713:
5708:
5184:
5144:
5114:
4871:
4806:
4697:
2857:
2692:
2610:
2601:
2518:
1719:
1128:
1124:
624:
611:
456:
355:
296:) used CB radios to locate service stations with better supplies of fuel, to notify other drivers of
234:
221:
150:
146:
94:
4241:
2584:; solid-state transmitters were not widely available until 1965, after the introduction of RF power-
2496:
allocated to a public safety network shared with police, fire and EMS services in Ontario, Canada).
7397:
7274:
7081:
6978:
6728:
6544:
6456:
6450:
6355:
6291:
6269:
6033:
5880:
5766:
5194:
5134:
4893:
4855:
4712:
4653:
4638:
4385:
3089:
2860:(FM) CB gear to escape the crowded AM channels. American AM gear has also been exported to Europe.
2700:
2657:
2557:
632:
553:
a quarter-century later, CB allowed people to get to know one another in a quasi-anonymous manner.
468:
448:
was another early 1976 hit song based on the CB-ing truckers myth, reaching the national US charts.
154:
515:
Image of Citizens Radio license 1972 issued by the United States Federal Communications Commission
7606:
7512:
7334:
7218:
7091:
7071:
7020:
6963:
6776:
6704:
6676:
6666:
6631:
6621:
6595:
6274:
6237:
5421:
5378:
5309:
5179:
5109:
5084:
5019:
4866:
4587:
3702:
3391:
3310:
2937:
spawned several other popular publications, including a communications and scanning magazine and
2632:
2596:, with one of several operating frequencies selected by a panel control in more expensive units.
2593:
1559:
standard channel 11 (at 27.085 MHz) is used to provide for part of European railroad's
478:
342:
7526:
4438:
7483:
7341:
7253:
7211:
6958:
6554:
6327:
6167:
5940:
5935:
5900:
5461:
5383:
5297:
5280:
5243:
5129:
5089:
4919:
4888:
4754:
4648:
4541:
4457:
4357:
4137:
4129:
3420:
3171:
3113:
2949:
2827:
2815:
2661:
2606:
811:
760:
615:
558:
511:
381:
327:
273:
4540:(First Anchor Books Edition; "Complete and uncut edition" ed.). New York: Anchor Books.
4244:. Office of the Deputy Minister, Spectrum, Information Technologies, and Telecommunications.
3829:. Communication and Multimedia Act. 1998. P.U.(B) 416 Jil. 48, No. 22(e). Act 588.
2933:
was produced monthly from mid-1977 and continuing publication through until the early 1990s.
7432:
7327:
7320:
7225:
6983:
6948:
6938:
6928:
6850:
6138:
6118:
5885:
5466:
5426:
5406:
5373:
5302:
5260:
5174:
5029:
5014:
4989:
4964:
4924:
4774:
4633:
4628:
4618:
2987:
2883:
2688:
2565:
1082:
807:
801:
764:
586:
308:
3775:. TRC 40. Government of Canada Department of Communications. 1 January 1977. Archived from
3458:
3360:
2746:
Another mobile antenna is the continuously loaded half-wave version. They do not require a
2512:
main office. While some users have moved on to other radio services, CB is still a popular
1787:
end – the used modulation («FM») or («F»), («AM») or («A»). e.g. (C9EFM, C9EF, C9EAM, C9EA)
7422:
7232:
6933:
6869:
6715:
6709:
6661:
6646:
6604:
6569:
6478:
6462:
6400:
6202:
6173:
6018:
5968:
5094:
4949:
4717:
4680:
3960:
2597:
2553:
which cause interference to services outside the citizens band and to consumer equipment.
1078:
1047:
487:
394:
313:
285:
246:
214:
7239:
6044:
4692:
1867:, CB channels were upgraded from 23 to 60 channels starting in 1979 and again in 1980 to
401:
covered the song with an altered UK song text, released as "Convoy GB" under the moniker
54:
7355:
7295:
7035:
6973:
6920:
6835:
6765:
6488:
6394:
6224:
5839:
5292:
5164:
5139:
5099:
5069:
4944:
4779:
4665:
4165:
3033:
Channels 23 , 24 , and 25 are not on the same radio frequencies in the
2778:
2488:
2480:
1806:
1749:
772:
250:
138:
134:
82:
39:
3622:"Radiocommunications (Maritime Ship Station — 27 MHz and VHF) Class Licence 2015"
3536:
7590:
7473:
7387:
7132:
7010:
6905:
6808:
6750:
6686:
6651:
6610:
6503:
6444:
6333:
5854:
5824:
5693:
5679:
5441:
5214:
5204:
5119:
5009:
5004:
4994:
4979:
4801:
4660:
3621:
3506:
3396:
3046:
RCRS was formerly known as the Class C Citizens Radio Service until the 1976 changes.
2970:
2966:
2835:
2811:
2625:
2589:
2550:
2537:
conditions local signals are inaudible due to reception of multiple distant signals.
1148:
1039:
619:
573:
437:— enjoyed a brief run of national popularity with the song when it became popular in
426:
412:
388:
377:
126:
110:
74:
3568:
7468:
6813:
6641:
6534:
6513:
6438:
6306:
6279:
6179:
5993:
5930:
5829:
5819:
5319:
5159:
5104:
5034:
4999:
4934:
4833:
4823:
4675:
4533:
3191:
2945:
2839:
2747:
2735:
2726:
2457:
1104:
603:
482:
398:
373:
369:
293:
292:, and fuel shortages and rationing were widespread. Drivers (especially commercial
257:
122:
17:
3982:
3776:
4187:
3492:
3064:
The term "outbanding" was introduced by Kneitel in the August 1979 issue of
639:
way to more compact CB radios with far more features afforded in older models.
347:(1978), made heavy reference to the phenomenon, as did television series such as
7427:
7086:
7076:
7040:
6493:
6411:
6406:
6384:
6345:
6296:
6023:
6013:
6008:
5519:
5169:
5079:
5064:
5024:
4984:
4843:
4218:
3440:
3006:
Channels 10–14 and 23, after channel 9 was reserved for emergency use.
2852:
2794:
2581:
2500:
1798:
1654:
1099:
CB radio in the UK was deregulated in December 2006 by the regulatory body
542:
472:
430:
408:
2540:
In the United States, the number of users and law enforcement financing by the
7407:
7101:
7002:
6636:
6433:
6365:
6161:
5524:
5231:
4929:
4838:
4794:
4764:
4742:
4732:
4707:
4074:
2926:
2782:
2681:
2674:
2585:
1560:
995:
538:
534:
519:
498:
297:
30:
4481:
4248:. Government of Canada. Innovation, Science and Economic Development Canada.
3758:. Vol. 10, no. 2. New York, NY: Davis Publications. pp. 55–56.
2941:
magazine, produced over several decades and running to some 18 volumes.
7487:
7055:
6900:
6895:
6840:
6820:
6770:
6428:
6360:
6244:
6214:
5983:
5509:
4974:
4789:
2864:
2844:
2697:
Echo mic: Deliberately introduces distortion and echo into transmitted audio
1857:
983:
768:
550:
530:
86:
7030:
4503:
4301:
3857:
Communications and Multimedia Act 1998 Class Assignments No. 1 of 2010
2580:
At the beginning of the CB radio service, transmitters and receivers used
1555:). For example, channel "11A" is 27.095 MHz, spaced 10 kHz
201:
6539:
6321:
6197:
5925:
5870:
5791:
5504:
5494:
5411:
5236:
5059:
3754:
Spinello, Matt P. (July–August 1972). "Touring Canada with your CB rig".
3507:"Radiocommunications (27 MHz Handphone Stations) Class Licence 2015"
2953:
2888:
2546:
999:
662:
607:
591:
504:
361:
269:
265:
242:
166:
35:
4271:
2654:
NOR / 9 / 19: Quickly tunes preset channels for calling or emergency use
2564:, as measured at the transmitter antenna connection. However, external
7025:
6483:
6259:
6185:
5945:
5875:
5776:
5723:
5499:
5484:
4105:"An Indonesian government decision regarding CB, with frequency charts"
2892:
2786:
2772:
2721:
2534:
2473:
2467:
1745:
1089:
991:
987:
628:
419:
from 1975, which peaked #10 in the US charts and #8 in Canadian charts.
3983:"Citizens Band (CB) Scanner Frequencies and Radio Frequency Reference"
2620:
Most CB radios sold in the United States have the following features:
1748:
has 40 additional channels at 26 MHz for a total of 80. The
6910:
6529:
6508:
6416:
6350:
5950:
5915:
5801:
5748:
5743:
5728:
5529:
5489:
4811:
4603:
4556:
2703:: Uses an electrostatic method to convert sound to electrical signals
2464:
is no longer required to purchase or use a CB radio in South Africa.
1864:
1760:
1756:
1156:
1011:
959:
788:
670:
174:
130:
106:
1742:
European Conference of Postal and Telecommunications Administrations
3575:. Australian Citizens Radio Monitors (South Australia) Incorporated
2641:(ALC): Limits the transmitter modulation level to reduce distortion
6864:
6825:
6733:
6316:
6264:
5514:
5451:
4759:
3654:. Australian Communications and Media Authority. 17 September 2018
3554:
2720:
2513:
2461:
1817:
in the 348 MHz, 420–422 MHz and 903–904 MHz bands.
1802:
1100:
1003:
971:
944:
635:) radio an attractive alternative to the overcrowded CB channels.
510:
200:
78:
53:
45:
29:
2781:
spectrum (3–30 MHz) can be refracted by charged ions in the
1018:) as the official citizens band radio organization in Indonesia.
6755:
6626:
5648:
5456:
3260:""I can't drive 55": The economics of the CB radio phenomenon".
142:
6048:
5652:
4560:
4204:
gives the history of one US manufacturer's line of CB equipment
3921:
3863:. Notification of Issuance of Class Assignments. Archived from
3242:
Hurd, Peter M. (May–June 1978). "Amateur Radio and MARS News".
818:
List of 27 MHz Marine Radio channels for use in Australia
549:
television episode about CB radio in 1978. Similar to Internet
6859:
4702:
3055:
Channels 24 , 25 , 52 , 53 , 76
2751:
1648:
627:
transmission, lack of interference by distant stations due to
602:
CB has lost much of its original appeal due to development of
1010:
was added in 1994, along with allowing use of the Australian
312:
widespread further disregard of the regulations (such as for
3805:
1791:
An example of correct designations: C9EF, C9EA, C9RF, C9RA
391:
50:
Cobra 18 WX ST II mobile CB radio with microphone
3607:
618:
for long-distance communications due to the 11–year
233:(GMRS). CB Class B is a more distant ancestor of the
3733:
Canada Radio-television and Telecommunications Commission
1842:
27.144 MHz – Japanese CB Channel 8 – Calling Channel
1143:
The standard channel numbering is harmonized through the
4377:
2948:'s story The Stand, Ralph Brentner's radio signal from
1853:
27.152 MHz – Japanese Remote Control R/C Frequency
1850:
27.136 MHz – Japanese Remote Control R/C Frequency
1847:
27.048 MHz – Japanese Remote Control R/C Frequency
1168:
1081:, made the ceremonial first legal British CB call from
475:(1976), peaked in the UK charts at #12 in early summer.
4302:"QTH.COM: FCC information regarding Illegal CB Radios"
2763:
for a mobile whip in a typical vehicle installation).
939:
Commercial fishing operations (ship–shore, ship–ship)
928:
Commercial fishing operations (ship–shore, ship–ship)
4010:
4008:
3024:
except channel 9, which was usually colored red.
917:
Safety and rescue operations (ship–shore, ship–ship)
678:
List of 27 MHz CB Channels for use in Australia
260:
and radio hobbyists. By the late 1960s, advances in
7543:
7497:
7461:
7365:
7312:
7189:
7180:
7115:
7064:
7001:
6919:
6888:
6849:
6786:
6695:
6594:
6587:
6522:
6471:
6154:
6147:
6096:
5959:
5899:
5863:
5810:
5757:
5686:
5538:
5475:
5397:
5361:
5318:
5259:
5193:
4902:
4594:
2628:: Reduces background noise (such as spark ignition)
1164:
channel assignments for CB use in the United States
161:. Illegal amplifiers to increase range are common.
4134:Trucking: Tractor-Trailer Driver Handbook/Workbook
4045:"(CB Rule 7) On what channels may I operate?"
2785:. Refracting signals off the ionosphere is called
2725:Typical center-loaded mobile CB antenna. Note the
2660:: Meter used to monitor reflected power caused by
851:Distress, urgency, safety and calling (secondary)
3593:* GL 226 (VK3PJB) ex-Secretary GL Club, Australia
2863:"Export radios" are sold in the United States as
3415:Chilton Automotive Editorial Department (1977).
3387:"Back in view, a First Lady with her own legacy"
840:Distress, urgency, safety and calling (primary)
767:enthusiasts. The club used the prefix "GL" (for
3410:
3408:
3406:
3770:"Licensing of General Radio Service Equipment"
3419:. Radnor, Pennsylvania: Chilton Book Company.
2729:, which shortens the antenna's overall length.
2709:: Uses two elements to reduce background noise
862:Commercial operations (ship–shore, ship–ship)
631:, and consistent communications made the VHF (
541:" as his handle and talking on the air in the
501:(1976) charted in the UK at #6 in late summer.
6060:
5664:
4572:
3161:
3159:
3157:
3155:
895:Specific events only (ship–shore, ship–ship)
533:was also an active CB operator, often using "
8:
4231:FCC regulations Part 95 Subpart D.
3827:Notification of Issuance Of Class Assignment
3118:: CS1 maint: multiple names: authors list (
405:, chart-peaking at #4 in the spring of 1976.
205:A QSL card issued by a US CB station in 1963
6086:Federal Motor Carrier Safety Administration
5587:Global telecommunications regulation bodies
2965:added CB radio coverage to its coverage of
1871:(from 26.965 MHz to 27.855 MHz).
1683:. Unsourced material may be challenged and
949:Hand-held CB transceiver; antenna not shown
89:band. Citizens band is distinct from other
7186:
7172:Glossary of the American trucking industry
7149:National Motor Freight Traffic Association
6591:
6151:
6067:
6053:
6045:
5671:
5657:
5649:
5623:
4579:
4565:
4557:
4158:""Omnibus" Amateur Radio Report and Order"
3306:"Fading CB craze signals end to licensing"
359:(debuted in 1979) and the animated series
7123:American Moving & Storage Association
3170:. Commack, New York: CRB Research Books.
2684:: Uses magnetic coil and permanent magnet
1703:Learn how and when to remove this message
967:gear while traveling across the border.
141:, transmitter power is limited to 4
1878:
1565:
816:
676:
241:is another two-way radio service in the
3293:– via Google News Archive Search.
3080:
2999:
2969:and still remains the only magazine in
2929:stores in the mid-1990s. In Australia,
1839:27.120 MHz – Japanese CB Channel 7
1836:27.112 MHz – Japanese CB Channel 6
1833:27.088 MHz – Japanese CB Channel 5
1830:27.080 MHz – Japanese CB Channel 4
1827:27.040 MHz – Japanese CB Channel 3
1824:26.976 MHz – Japanese CB Channel 2
1821:26.968 MHz – Japanese CB Channel 1
884:Non-commercial operations (ship–shore)
873:Non-commercial operations (ship–shore)
755:The first CB club in Australia was the
585:Since the price of CB was dropping and
435:Cledus Maggard & The Citizen's Band
7139:International Brotherhood of Teamsters
6076:Trucking industry in the United States
4514:from the original on 27 September 2017
4462:: CS1 maint: archived copy as title (
4455:
4362:: CS1 maint: archived copy as title (
4355:
4282:from the original on 10 September 2017
4242:"RIC-18 — General Radio Service (GRS)"
4081:. UHF CB Australia - New Zealand PRS.
4075:"Repeater Locations & Information"
3993:from the original on 14 September 2015
3932:from the original on 14 September 2017
3671:
3669:
3551:""Aussie" 18 Channel Radio Guide"
3304:Holsendolph, Ernest (April 28, 1983).
3111:
3090:"RIC-18 — General Radio Service (GRS)"
2635:switch: Selects weather-radio receiver
906:Non-commercial operations (ship–ship)
446:Shad O'Shea & the 18 Wheelers
7573:Note: Defunct companies are shown in
7144:National Motor Freight Classification
6560:Utility Trailer Manufacturing Company
4388:from the original on 23 February 2018
4055:from the original on 14 February 2009
3890:"Class Assignment No. 1 of 2017"
3836:from the original on 30 November 2010
3255:
3253:
3140:from the original on 28 November 2010
453:'Round the World with the Rubber Duck
380:" (1975), which climbed to #1 in the
7:
5633:
4312:from the original on 9 November 2017
4217:. New Company Driver. Archived from
3902:from the original on 19 January 2018
3804:. Indonesian DX Club. Archived from
3469:from the original on 4 December 2015
3459:"Citizens Band Radio Service (CBRS)"
3100:from the original on 12 January 2008
1681:adding citations to reliable sources
169:commonly called a Beam or a Yagi.
6114:Federal Bridge Gross Weight Formula
3385:Tweed, Michael (31 December 2006).
3325:James Wesley Huguely=Cledus Maggard
2691:element; rugged, low-cost but high-
526:, used the CB handle "First Mama".
4194:from the original on 24 April 2010
4085:from the original on 12 March 2018
3447:from the original on 14 June 2011.
3338:"Gay ballad is joined by "Savage""
3219:. FCC Part 95. Archived from
2712:Power mic: An amplified microphone
307:as of 1972) required the use of a
25:
7403:Eighteen Wheels and a Dozen Roses
5782:Common traffic advisory frequency
4252:from the original on 15 June 2017
4128:Adams, Alice (28 November 2005).
2956:was able to be received over CB.
2613:-only, although there were a few
2542:Federal Communications Commission
1563:radio communication with trains.
1071:Laurie Lingo & The Dipsticks’
305:Federal Communications Commission
211:Federal Communications Commission
7506:18 Wheeler: American Pro Trucker
5632:
5622:
5613:
5612:
5601:
5222:Free-space optical communication
4344:from the original on 6 July 2010
4025:from the original on 1 July 2017
3951:Rohrer, Finlo (14 August 2006).
3729:"RIC-18 - General Radio Service"
2962:National Communications Magazine
1653:
763:in 1967 and consisted mainly of
581:Boating and the U.S. Coast Guard
403:Laurie Lingo & the Dipsticks
288:, the U.S. government imposed a
81:(or the 11-m wavelength) in the
58:Cobra 50 WX ST Handheld CB Radio
6124:International Registration Plan
4445:from the original on 2015-04-02
4420:from the original on 2015-02-15
3820:"Personal Radio Service Device"
3441:"Radio Information for Boaters"
3340:. Billboard. September 13, 1976
3314:. Section A, page 19.
524:First Lady of the United States
7534:Big Rigs: Over the Road Racing
7159:SmartWay Transport Partnership
7154:National Private Truck Council
7128:American Trucking Associations
4215:"Learn the basics of CB radio"
1064:CB radio in the United Kingdom
1016:Radio Antar Penduduk Indonesia
757:Charlie Brown Touring Car Club
38:but can also from a vehicle's
1:
5891:Maritime mobile amateur radio
4478:"www.dx27.net - QRZ Database"
3648:"Marine radio qualifications"
3443:. United States Coast Guard.
2805:Freebanding and export radios
563:adjacent-channel interference
290:nationwide 55 mph speed limit
192:CB radio in the United States
6880:United States Postal Service
6804:American Lamprecht Transport
6109:Electronic on-board recorder
6090:Economy of the United States
6034:Voting (diversity combining)
5772:Aircraft emergency frequency
5719:General Mobile Radio Service
5608:Telecommunication portal
5389:Telecommunications equipment
3264:. Vol. 15, no. 3.
2983:Citizens Band radio in India
2834:Many freeband operators use
231:General Mobile Radio Service
7383:Bonnie Jean (Little Sister)
7378:Big Wheels in the Moonlight
6944:Gentle Giant Moving Company
6134:Motor carrier safety rating
6104:Commercial driver's license
5787:Mandatory frequency airport
5125:Alexander Stepanovich Popov
3683:. Transport Safety Victoria
3628:. Commonwealth of Australia
3513:. Commonwealth of Australia
3134:"27 Megacycle History"
2624:Automatic noise limiter or
1730:Country-specific variations
462:Bubbling Under Hot 100
272:, similar to those used in
268:language evolved alongside
177:and the Australian UHF CB.
165:connected to a directional
7633:
7438:Roll On (Eighteen Wheeler)
7289:The Great Smokey Roadblock
5979:Automatic vehicle location
4829:Telecommunications history
3707:www.marinerescuensw.com.au
3681:transportsafety.vic.gov.au
3604:"[no title cited]"
3280:"The Southeast Missourian"
2770:
2750:to present a near-50
2707:Noise-canceling microphone
2568:are often used illegally.
1875:CB Radio Channels (ANATEL)
1733:
1133:single-sideband modulation
1061:
799:
189:
7568:
7167:
6746:Old Dominion Freight Line
6740:New England Motor Freight
6697:Less than truckload (LTL)
6129:Motor Carrier Act of 1980
6082:
6004:Dynamic range compression
5921:Dual-tone multi-frequency
5835:Professional mobile radio
5797:Single Frequency Approach
5596:
5437:Public Switched Telephone
5249:telecommunication circuit
5210:Fiber-optic communication
4955:Francis Blake (telephone)
4750:Optical telecommunication
3327:Retrieved 9 February 2021
3266:The Independent Institute
3192:"Citizen Band (CB) Radio"
787:With the introduction of
759:(CBTCC), which formed in
7520:American Truck Simulator
6889:Regional parcel carriers
6798:Access America Transport
6723:Consolidated Freightways
6029:Radiotelephony procedure
5845:Specialized Mobile Radio
5348:Orbital angular-momentum
4785:Satellite communications
4624:Communications satellite
4049:frwebgate.access.gpo.gov
3168:Tomcat's Big CB Handbook
2560:) and 12 watts for
796:27 MHz marine radio
71:land mobile radio system
27:Land mobile radio system
7268:Smokey & the Bandit
6831:Total Quality Logistics
5739:Multi-Use Radio Service
5227:Molecular communication
5050:Gardiner Greene Hubbard
4879:Undersea telegraph line
4614:Cable protection system
3553:. ACBRO. Archived from
3361:"Rod Hart - Breakeroo!"
2777:All frequencies in the
2639:Automatic level control
2523:Multi-Use Radio Service
1815:personal radio services
1034:Warta Kerajaan Malaysia
777:amateur radio operators
239:Multi-Use Radio Service
7373:A Tombstone Every Mile
6657:Patriot Transportation
5811:Land-based commercial
5699:Amateur radio repeater
5369:Communication protocol
5155:Charles Sumner Tainter
4970:Walter Houser Brattain
4915:Edwin Howard Armstrong
4723:Information revolution
3756:Elementary Electronics
3735:. Government of Canada
3626:www.legislation.gov.au
3535:. ACRM. Archived from
3511:www.legislation.gov.au
3491:. ACRM. Archived from
2918:Popular Communications
2799:Sporadic-E propagation
2730:
1736:Personal radio service
950:
783:Competing technologies
516:
206:
91:personal radio service
59:
51:
43:
7602:1970s fads and trends
7413:Girl on the Billboard
7016:Bowlin Travel Centers
6788:Third-party logistics
6523:Trailer manufacturers
6302:Hyundai Motor America
5813:and government mobile
5760:(aeronautical mobile)
5343:Polarization-division
5075:Narinder Singh Kapany
5040:Erna Schneider Hoover
4960:Jagadish Chandra Bose
4940:Alexander Graham Bell
4671:online video platform
3539:on 17 September 2006.
3495:on 17 September 2006.
3417:Chilton's CB Handbook
3166:Kneitel, Tom (1988).
2724:
1546:Intermediate channels
1118:Frequency allocations
948:
514:
433:, who — recording as
322:Smokey and the Bandit
226:amateur radio service
204:
111:Amateur Radio Service
57:
49:
33:
7556:The Rolling Memorial
7443:Six Days on the Road
7393:Drivin' My Life Away
6472:Engine manufacturers
5850:Trunked radio system
5714:Public Radio Service
5709:Family Radio Service
5687:Amateur and hobbyist
5185:Vladimir K. Zworykin
5145:Almon Brown Strowger
5115:Charles Grafton Page
4770:Prepaid mobile phone
4698:Electrical telegraph
4130:"The first CB radio"
3926:my27mhz.blogspot.com
2959:In the early 2000s,
2939:Amateur Radio Action
2858:frequency modulation
2687:Ceramic mic: Uses a
2519:Family Radio Service
1677:improve this section
1129:amplitude modulation
1125:frequency modulation
612:Family Radio Service
429:song made famous by
356:The Dukes of Hazzard
235:Family Radio Service
222:Ultra-high frequency
93:allocations such as
7597:Citizens band radio
7551:Citizens band radio
7398:East Bound and Down
7282:The Gang's All Here
7275:They Drive by Night
7082:J. Harwood Cochrane
6979:Two Men and a Truck
6729:Estes Express Lines
6155:Truck manufacturers
5881:Coast radio station
5767:Air traffic control
5704:Citizens band radio
5135:Johann Philipp Reis
4894:Wireless revolution
4856:The Telephone Cases
4713:Hydraulic telegraph
4117:on 20 January 2016.
3963:on 4 September 2011
3808:on 2 February 2007.
3709:. Marine Rescue NSW
3557:on 13 January 2004.
2973:covering CB radio.
2895:for amateur radio.
2701:Electret microphone
2662:mismatched antennas
1175:
1170:CB Radio Channels (
1112:Young Farmers' Club
819:
679:
633:Very High Frequency
469:One Piece At A Time
444:"Colorado Call" by
353:(debuted in 1974),
63:Citizens band radio
18:Citizens Band radio
7513:18 Wheels of Steel
7335:B. J. and the Bear
7072:Frederick W. Smith
7021:Dixie Travel Plaza
6777:Yellow Corporation
6632:FFE Transportation
5864:Marine (shipboard)
5749:UHF CB (Australia)
5333:Frequency-division
5310:Telephone exchange
5180:Charles Wheatstone
5110:Jun-ichi Nishizawa
5085:Innocenzo Manzetti
5020:Reginald Fessenden
4755:Optical telegraphy
4588:Telecommunications
4504:"Sugar Delta Home"
4221:on 1 October 2008.
4019:legifrance.gouv.fr
3987:radioreference.com
3922:"Senarai Keahlian"
3870:on 19 January 2018
3569:"CB Radio History"
3489:"CB Radio History"
3392:The New York Times
3311:The New York Times
3262:Independent Review
3094:strategis.ic.gc.ca
2931:CB Action Magazine
2731:
2682:Dynamic microphone
2602:super-regenerative
1169:
951:
817:
711:Emergency Channel
677:
674:called the FM320.
645:police speed traps
517:
423:"The White Knight"
274:emergency services
207:
77:operating near 27
60:
52:
44:
7617:Radio regulations
7584:
7583:
7564:
7563:
7484:Road Dog Trucking
7342:Ice Road Truckers
7254:Maximum Overdrive
7212:Breaker! Breaker!
6997:
6996:
6583:
6582:
6550:Hyundai Translead
6328:Marmon-Herrington
6168:American LaFrance
6084:Regulated by the
6042:
6041:
5903:Selective calling
5646:
5645:
5384:Store and forward
5379:Data transmission
5293:Network switching
5244:Transmission line
5090:Guglielmo Marconi
5055:Internet pioneers
4920:Mohamed M. Atalla
4889:Whistled language
4547:978-0-385-52885-6
4272:"FCC Enforcement"
4168:on 13 August 2014
4162:cbradiosource.com
3957:BBC News Magazine
3465:. 4 August 2011.
2909:CB Radio Magazine
2828:frequency counter
2793:In times of high
2677:choices include:
2566:linear amplifiers
2485:Internet gateways
2455:
2454:
1713:
1712:
1705:
1642:
1641:
1538:
1537:
1139:Standard channels
943:
942:
812:Marine Rescue NSW
761:Morwell, Victoria
748:
747:
616:radio propagation
559:Mississippi River
328:Breaker! Breaker!
16:(Redirected from
7624:
7577:
7453:The White Knight
7433:Roll On Big Mama
7328:American Trucker
7321:American Loggers
7303:White Line Fever
7187:
6921:Moving companies
6592:
6152:
6139:National Network
6119:Hours of service
6069:
6062:
6055:
6046:
5960:System elements
5886:Marine VHF radio
5673:
5666:
5659:
5650:
5636:
5635:
5626:
5625:
5616:
5615:
5606:
5605:
5604:
5477:Notable networks
5467:Wireless network
5407:Cellular network
5399:Types of network
5374:Computer network
5261:Network topology
5175:Thomas A. Watson
5030:Oliver Heaviside
5015:Philo Farnsworth
4990:Daniel Davis Jr.
4965:Charles Bourseul
4925:John Logie Baird
4634:Data compression
4629:Computer network
4581:
4574:
4567:
4558:
4552:
4551:
4530:
4524:
4523:
4521:
4519:
4500:
4494:
4493:
4491:
4489:
4480:. Archived from
4474:
4468:
4467:
4461:
4453:
4451:
4450:
4435:
4429:
4428:
4426:
4425:
4419:
4412:
4408:"CQ 2014-02 OPT"
4404:
4398:
4397:
4395:
4393:
4374:
4368:
4367:
4361:
4353:
4351:
4349:
4343:
4336:
4328:
4322:
4321:
4319:
4317:
4298:
4292:
4291:
4289:
4287:
4268:
4262:
4261:
4259:
4257:
4238:
4232:
4229:
4223:
4222:
4211:
4205:
4203:
4201:
4199:
4184:
4178:
4177:
4175:
4173:
4164:. Archived from
4154:
4148:
4147:
4125:
4119:
4118:
4116:
4110:. Archived from
4109:
4101:
4095:
4094:
4092:
4090:
4079:www.uhfcb.com.au
4071:
4065:
4064:
4062:
4060:
4041:
4035:
4034:
4032:
4030:
4012:
4003:
4002:
4000:
3998:
3979:
3973:
3972:
3970:
3968:
3959:. Archived from
3948:
3942:
3941:
3939:
3937:
3918:
3912:
3911:
3909:
3907:
3901:
3894:
3886:
3880:
3879:
3877:
3875:
3869:
3862:
3852:
3846:
3845:
3843:
3841:
3835:
3824:
3816:
3810:
3809:
3798:
3792:
3791:
3789:
3787:
3781:
3774:
3766:
3760:
3759:
3751:
3745:
3744:
3742:
3740:
3725:
3719:
3718:
3716:
3714:
3699:
3693:
3692:
3690:
3688:
3673:
3664:
3663:
3661:
3659:
3644:
3638:
3637:
3635:
3633:
3618:
3612:
3611:
3606:. Archived from
3600:
3594:
3591:
3585:
3584:
3582:
3580:
3565:
3559:
3558:
3547:
3541:
3540:
3529:
3523:
3522:
3520:
3518:
3503:
3497:
3496:
3485:
3479:
3478:
3476:
3474:
3455:
3449:
3448:
3437:
3431:
3430:
3412:
3401:
3400:
3395:. Archived from
3382:
3376:
3375:
3373:
3371:
3356:
3350:
3349:
3347:
3345:
3334:
3328:
3322:
3316:
3315:
3301:
3295:
3294:
3292:
3290:
3276:
3270:
3269:
3257:
3248:
3247:
3239:
3233:
3232:
3230:
3228:
3223:on 24 March 2021
3213:
3207:
3206:
3204:
3203:
3188:
3182:
3181:
3163:
3150:
3149:
3147:
3145:
3130:
3124:
3123:
3117:
3109:
3107:
3105:
3085:
3069:
3066:S9 Magazine
3062:
3056:
3053:
3047:
3044:
3038:
3031:
3025:
3022:
3016:
3013:
3007:
3004:
2988:List of CB slang
2915:s successor was
2884:Modern Electrics
1879:
1708:
1701:
1697:
1694:
1688:
1657:
1649:
1638:27.145 MHz
1566:
1534:27.405 MHz
1526:27.325 MHz
1518:27.235 MHz
1510:27.155 MHz
1502:27.055 MHz
1494:27.395 MHz
1486:27.315 MHz
1478:27.255 MHz
1470:27.135 MHz
1462:27.035 MHz
1454:27.385 MHz
1446:27.305 MHz
1438:27.225 MHz
1430:27.125 MHz
1422:27.025 MHz
1414:27.375 MHz
1406:27.295 MHz
1398:27.215 MHz
1390:27.115 MHz
1382:27.015 MHz
1374:27.365 MHz
1366:27.285 MHz
1358:27.205 MHz
1350:27.105 MHz
1342:27.005 MHz
1334:27.355 MHz
1326:27.275 MHz
1318:27.185 MHz
1310:27.085 MHz
1302:26.985 MHz
1294:27.345 MHz
1286:27.265 MHz
1278:27.175 MHz
1270:27.075 MHz
1262:26.975 MHz
1254:27.335 MHz
1246:27.245 MHz
1238:27.165 MHz
1230:27.065 MHz
1222:26.965 MHz
1176:
1083:Trafalgar Square
820:
808:marine VHF radio
802:Marine VHF radio
765:four-wheel drive
722:AM Call Channel
700:Highway Channel
680:
629:skip propagation
598:21st-century use
339:Handle with Care
280:1970s popularity
167:Yagi–Uda antenna
21:
7632:
7631:
7627:
7626:
7625:
7623:
7622:
7621:
7587:
7586:
7585:
7580:
7572:
7560:
7539:
7493:
7457:
7423:Papa Loved Mama
7361:
7308:
7182:Popular culture
7176:
7163:
7111:
7097:Keith Jesperson
7060:
7051:T/A & Petro
6993:
6915:
6884:
6851:National parcel
6845:
6782:
6716:Con-way Freight
6710:Averitt Express
6691:
6682:Western Express
6662:Roehl Transport
6647:Landstar System
6605:Averitt Express
6579:
6570:Wabash National
6555:Lufkin Trailers
6518:
6467:
6463:Workhorse Group
6143:
6092:
6088:
6078:
6073:
6043:
6038:
6019:Rayleigh fading
5961:
5955:
5902:
5895:
5859:
5812:
5806:
5759:
5753:
5682:
5677:
5647:
5642:
5602:
5600:
5592:
5534:
5471:
5393:
5357:
5314:
5263:
5255:
5196:
5189:
5095:Robert Metcalfe
4950:Tim Berners-Lee
4898:
4718:Information Age
4590:
4585:
4555:
4548:
4532:
4531:
4527:
4517:
4515:
4502:
4501:
4497:
4487:
4485:
4484:on 2 April 2015
4476:
4475:
4471:
4454:
4448:
4446:
4439:"Archived copy"
4437:
4436:
4432:
4423:
4421:
4417:
4410:
4406:
4405:
4401:
4391:
4389:
4376:
4375:
4371:
4354:
4347:
4345:
4341:
4334:
4332:"Archived copy"
4330:
4329:
4325:
4315:
4313:
4300:
4299:
4295:
4285:
4283:
4270:
4269:
4265:
4255:
4253:
4240:
4239:
4235:
4230:
4226:
4213:
4212:
4208:
4197:
4195:
4186:
4185:
4181:
4171:
4169:
4156:
4155:
4151:
4144:
4136:. p. 558.
4127:
4126:
4122:
4114:
4107:
4103:
4102:
4098:
4088:
4086:
4073:
4072:
4068:
4058:
4056:
4043:
4042:
4038:
4028:
4026:
4014:
4013:
4006:
3996:
3994:
3981:
3980:
3976:
3966:
3964:
3953:"Over and out?"
3950:
3949:
3945:
3935:
3933:
3920:
3919:
3915:
3905:
3903:
3899:
3892:
3888:
3887:
3883:
3873:
3871:
3867:
3860:
3854:
3853:
3849:
3839:
3837:
3833:
3822:
3818:
3817:
3813:
3800:
3799:
3795:
3785:
3783:
3779:
3772:
3768:
3767:
3763:
3753:
3752:
3748:
3738:
3736:
3727:
3726:
3722:
3712:
3710:
3703:"Marine Radios"
3701:
3700:
3696:
3686:
3684:
3675:
3674:
3667:
3657:
3655:
3652:www.acma.gov.au
3646:
3645:
3641:
3631:
3629:
3620:
3619:
3615:
3602:
3601:
3597:
3592:
3588:
3578:
3576:
3573:www.acrm.org.au
3567:
3566:
3562:
3549:
3548:
3544:
3531:
3530:
3526:
3516:
3514:
3505:
3504:
3500:
3487:
3486:
3482:
3472:
3470:
3457:
3456:
3452:
3439:
3438:
3434:
3427:
3414:
3413:
3404:
3384:
3383:
3379:
3369:
3367:
3358:
3357:
3353:
3343:
3341:
3336:
3335:
3331:
3323:
3319:
3303:
3302:
3298:
3288:
3286:
3284:news.google.com
3278:
3277:
3273:
3259:
3258:
3251:
3241:
3240:
3236:
3226:
3224:
3215:
3214:
3210:
3201:
3199:
3190:
3189:
3185:
3178:
3165:
3164:
3153:
3143:
3141:
3132:
3131:
3127:
3110:
3103:
3101:
3087:
3086:
3082:
3078:
3073:
3072:
3063:
3059:
3054:
3050:
3045:
3041:
3032:
3028:
3023:
3019:
3014:
3010:
3005:
3001:
2996:
2979:
2901:
2878:
2807:
2775:
2769:
2719:
2615:single sideband
2598:Superheterodyne
2578:
2509:
2489:radio repeaters
1738:
1732:
1716:Single-sideband
1709:
1698:
1692:
1689:
1674:
1658:
1647:
1630:27.095 MHz
1622:27.195 MHz
1614:27.045 MHz
1606:26.995 MHz
1548:
1141:
1120:
1094:TV interference
1066:
1060:
1048:channel spacing
1024:
980:
972:paging services
956:
826:Frequency (MHz)
804:
798:
785:
753:
733:LSB Call Local
686:Frequency (MHz)
658:
653:
600:
587:VHF Marine Band
583:
488:Breaker-Breaker
395:Dave Lee Travis
286:1973 oil crisis
282:
247:1.25-meter band
199:
194:
188:
183:
28:
23:
22:
15:
12:
11:
5:
7630:
7628:
7620:
7619:
7614:
7609:
7604:
7599:
7589:
7588:
7582:
7581:
7579:
7578:
7569:
7566:
7565:
7562:
7561:
7559:
7558:
7553:
7547:
7545:
7541:
7540:
7538:
7537:
7530:
7523:
7516:
7509:
7501:
7499:
7495:
7494:
7492:
7491:
7481:
7471:
7465:
7463:
7459:
7458:
7456:
7455:
7450:
7445:
7440:
7435:
7430:
7425:
7420:
7415:
7410:
7405:
7400:
7395:
7390:
7385:
7380:
7375:
7369:
7367:
7363:
7362:
7360:
7359:
7356:Trick My Truck
7352:
7345:
7338:
7331:
7324:
7316:
7314:
7310:
7309:
7307:
7306:
7299:
7292:
7285:
7278:
7271:
7264:
7257:
7250:
7243:
7236:
7229:
7222:
7215:
7208:
7201:
7193:
7191:
7184:
7178:
7177:
7175:
7174:
7168:
7165:
7164:
7162:
7161:
7156:
7151:
7146:
7141:
7136:
7135:(Dial-A-Truck)
7130:
7125:
7119:
7117:
7113:
7112:
7110:
7109:
7107:Reginald Denny
7104:
7099:
7094:
7089:
7084:
7079:
7074:
7068:
7066:
7062:
7061:
7059:
7058:
7053:
7048:
7043:
7038:
7036:Pilot Flying J
7033:
7028:
7023:
7018:
7013:
7007:
7005:
6999:
6998:
6995:
6994:
6992:
6991:
6986:
6981:
6976:
6971:
6969:North American
6966:
6961:
6956:
6951:
6946:
6941:
6936:
6931:
6925:
6923:
6917:
6916:
6914:
6913:
6908:
6903:
6898:
6892:
6890:
6886:
6885:
6883:
6882:
6877:
6872:
6867:
6862:
6856:
6854:
6847:
6846:
6844:
6843:
6838:
6836:Trailer Bridge
6833:
6828:
6823:
6818:
6817:
6816:
6806:
6801:
6793:
6791:
6784:
6783:
6781:
6780:
6773:
6768:
6766:TForce Freight
6763:
6758:
6753:
6748:
6743:
6736:
6731:
6726:
6719:
6712:
6707:
6701:
6699:
6693:
6692:
6690:
6689:
6684:
6679:
6674:
6669:
6664:
6659:
6654:
6649:
6644:
6639:
6634:
6629:
6624:
6619:
6614:
6607:
6601:
6599:
6589:
6588:Motor carriers
6585:
6584:
6581:
6580:
6578:
6577:
6572:
6567:
6562:
6557:
6552:
6547:
6542:
6537:
6532:
6526:
6524:
6520:
6519:
6517:
6516:
6511:
6506:
6501:
6496:
6491:
6489:Detroit Diesel
6486:
6481:
6475:
6473:
6469:
6468:
6466:
6465:
6460:
6453:
6448:
6441:
6436:
6431:
6426:
6419:
6414:
6409:
6404:
6397:
6392:
6387:
6382:
6375:
6368:
6363:
6358:
6353:
6348:
6343:
6336:
6331:
6324:
6319:
6314:
6309:
6304:
6299:
6294:
6289:
6282:
6277:
6272:
6267:
6262:
6257:
6256:
6255:
6248:
6234:
6227:
6225:CNH Industrial
6222:
6217:
6212:
6205:
6200:
6195:
6188:
6183:
6176:
6171:
6164:
6158:
6156:
6149:
6145:
6144:
6142:
6141:
6136:
6131:
6126:
6121:
6116:
6111:
6106:
6100:
6098:
6094:
6093:
6083:
6080:
6079:
6074:
6072:
6071:
6064:
6057:
6049:
6040:
6039:
6037:
6036:
6031:
6026:
6021:
6016:
6011:
6006:
6001:
5996:
5991:
5986:
5981:
5976:
5971:
5965:
5963:
5962:and principles
5957:
5956:
5954:
5953:
5948:
5943:
5938:
5933:
5928:
5923:
5918:
5913:
5907:
5905:
5897:
5896:
5894:
5893:
5888:
5883:
5878:
5873:
5867:
5865:
5861:
5860:
5858:
5857:
5852:
5847:
5842:
5840:Radio repeater
5837:
5832:
5827:
5822:
5816:
5814:
5808:
5807:
5805:
5804:
5799:
5794:
5789:
5784:
5779:
5774:
5769:
5763:
5761:
5755:
5754:
5752:
5751:
5746:
5741:
5736:
5731:
5726:
5721:
5716:
5711:
5706:
5701:
5696:
5690:
5688:
5684:
5683:
5678:
5676:
5675:
5668:
5661:
5653:
5644:
5643:
5641:
5640:
5630:
5620:
5610:
5597:
5594:
5593:
5591:
5590:
5583:
5578:
5573:
5568:
5563:
5562:
5561:
5556:
5548:
5542:
5540:
5536:
5535:
5533:
5532:
5527:
5522:
5517:
5512:
5507:
5502:
5497:
5492:
5487:
5481:
5479:
5473:
5472:
5470:
5469:
5464:
5459:
5454:
5449:
5444:
5439:
5434:
5429:
5424:
5419:
5414:
5409:
5403:
5401:
5395:
5394:
5392:
5391:
5386:
5381:
5376:
5371:
5365:
5363:
5359:
5358:
5356:
5355:
5350:
5345:
5340:
5335:
5330:
5328:Space-division
5324:
5322:
5316:
5315:
5313:
5312:
5307:
5306:
5305:
5300:
5290:
5289:
5288:
5278:
5273:
5267:
5265:
5257:
5256:
5254:
5253:
5252:
5251:
5241:
5240:
5239:
5229:
5224:
5219:
5218:
5217:
5207:
5201:
5199:
5191:
5190:
5188:
5187:
5182:
5177:
5172:
5167:
5165:Camille Tissot
5162:
5157:
5152:
5147:
5142:
5140:Claude Shannon
5137:
5132:
5130:Tivadar Puskás
5127:
5122:
5117:
5112:
5107:
5102:
5100:Antonio Meucci
5097:
5092:
5087:
5082:
5077:
5072:
5070:Charles K. Kao
5067:
5062:
5057:
5052:
5047:
5045:Harold Hopkins
5042:
5037:
5032:
5027:
5022:
5017:
5012:
5007:
5002:
4997:
4992:
4987:
4982:
4977:
4972:
4967:
4962:
4957:
4952:
4947:
4945:Emile Berliner
4942:
4937:
4932:
4927:
4922:
4917:
4912:
4906:
4904:
4900:
4899:
4897:
4896:
4891:
4886:
4884:Videotelephony
4881:
4876:
4875:
4874:
4869:
4859:
4852:
4847:
4841:
4836:
4831:
4826:
4821:
4820:
4819:
4814:
4809:
4799:
4798:
4797:
4787:
4782:
4780:Radiotelephone
4777:
4772:
4767:
4762:
4757:
4752:
4747:
4746:
4745:
4735:
4730:
4725:
4720:
4715:
4710:
4705:
4700:
4695:
4690:
4685:
4684:
4683:
4678:
4673:
4668:
4666:Internet video
4658:
4657:
4656:
4651:
4646:
4641:
4631:
4626:
4621:
4616:
4611:
4606:
4600:
4598:
4592:
4591:
4586:
4584:
4583:
4576:
4569:
4561:
4554:
4553:
4546:
4525:
4508:Sugar-Delta.it
4495:
4469:
4430:
4399:
4369:
4323:
4293:
4263:
4233:
4224:
4206:
4179:
4149:
4142:
4120:
4096:
4066:
4036:
4004:
3974:
3943:
3913:
3881:
3847:
3811:
3793:
3782:on 6 July 2011
3761:
3746:
3720:
3694:
3677:"Marine radio"
3665:
3639:
3613:
3610:on 8 May 2009.
3595:
3586:
3560:
3542:
3524:
3498:
3480:
3450:
3432:
3425:
3402:
3399:on 2016-12-16.
3377:
3351:
3329:
3317:
3296:
3271:
3249:
3246:. p. 112.
3234:
3208:
3196:No Wires Radio
3183:
3176:
3151:
3125:
3079:
3077:
3074:
3071:
3070:
3057:
3048:
3039:
3026:
3017:
3008:
2998:
2997:
2995:
2992:
2991:
2990:
2985:
2978:
2975:
2967:scanner radios
2900:
2897:
2877:
2874:
2836:amateur radios
2806:
2803:
2771:Main article:
2768:
2765:
2718:
2715:
2714:
2713:
2710:
2704:
2698:
2695:
2685:
2672:
2671:
2670:Volume control
2668:
2666:antenna cables
2655:
2652:
2648:
2642:
2636:
2629:
2577:
2574:
2508:
2505:
2481:Czech Republic
2453:
2452:
2449:
2446:
2443:
2439:
2438:
2435:
2432:
2429:
2425:
2424:
2421:
2418:
2415:
2411:
2410:
2407:
2404:
2401:
2397:
2396:
2393:
2390:
2387:
2383:
2382:
2379:
2376:
2373:
2369:
2368:
2365:
2362:
2359:
2355:
2354:
2351:
2348:
2345:
2341:
2340:
2337:
2334:
2331:
2327:
2326:
2323:
2320:
2317:
2313:
2312:
2309:
2306:
2303:
2299:
2298:
2295:
2292:
2289:
2285:
2284:
2281:
2278:
2275:
2271:
2270:
2267:
2264:
2261:
2257:
2256:
2253:
2250:
2247:
2243:
2242:
2239:
2236:
2233:
2229:
2228:
2225:
2222:
2219:
2215:
2214:
2211:
2208:
2205:
2201:
2200:
2197:
2194:
2191:
2187:
2186:
2183:
2180:
2177:
2173:
2172:
2169:
2166:
2163:
2159:
2158:
2155:
2152:
2149:
2145:
2144:
2141:
2138:
2135:
2131:
2130:
2127:
2124:
2121:
2117:
2116:
2113:
2110:
2107:
2103:
2102:
2099:
2096:
2093:
2089:
2088:
2085:
2082:
2079:
2075:
2074:
2071:
2068:
2065:
2061:
2060:
2057:
2054:
2051:
2047:
2046:
2043:
2040:
2037:
2033:
2032:
2029:
2026:
2023:
2019:
2018:
2015:
2012:
2009:
2005:
2004:
2001:
1998:
1995:
1991:
1990:
1987:
1984:
1981:
1977:
1976:
1973:
1970:
1967:
1963:
1962:
1959:
1956:
1953:
1949:
1948:
1945:
1942:
1939:
1935:
1934:
1931:
1928:
1925:
1921:
1920:
1917:
1914:
1911:
1907:
1906:
1903:
1900:
1897:
1893:
1892:
1889:
1886:
1883:
1855:
1854:
1851:
1848:
1844:
1843:
1840:
1837:
1834:
1831:
1828:
1825:
1822:
1807:frequency plan
1789:
1788:
1785:
1782:
1779:
1750:United Kingdom
1734:Main article:
1731:
1728:
1711:
1710:
1661:
1659:
1652:
1646:
1643:
1640:
1639:
1636:
1631:
1628:
1623:
1620:
1615:
1612:
1607:
1604:
1598:
1597:
1594:
1591:
1588:
1585:
1582:
1579:
1576:
1573:
1570:
1547:
1544:
1543:
1542:
1536:
1535:
1532:
1529:
1527:
1524:
1521:
1519:
1516:
1513:
1511:
1508:
1505:
1503:
1500:
1496:
1495:
1492:
1489:
1487:
1484:
1481:
1479:
1476:
1473:
1471:
1468:
1465:
1463:
1460:
1456:
1455:
1452:
1449:
1447:
1444:
1441:
1439:
1436:
1433:
1431:
1428:
1425:
1423:
1420:
1416:
1415:
1412:
1409:
1407:
1404:
1401:
1399:
1396:
1393:
1391:
1388:
1385:
1383:
1380:
1376:
1375:
1372:
1369:
1367:
1364:
1361:
1359:
1356:
1353:
1351:
1348:
1345:
1343:
1340:
1336:
1335:
1332:
1329:
1327:
1324:
1321:
1319:
1316:
1313:
1311:
1308:
1305:
1303:
1300:
1296:
1295:
1292:
1289:
1287:
1284:
1281:
1279:
1276:
1273:
1271:
1268:
1265:
1263:
1260:
1256:
1255:
1252:
1249:
1247:
1244:
1241:
1239:
1236:
1233:
1231:
1228:
1225:
1223:
1220:
1216:
1215:
1212:
1209:
1207:
1204:
1201:
1199:
1196:
1193:
1191:
1188:
1185:
1183:
1180:
1140:
1137:
1119:
1116:
1075:27/81 Bandplan
1062:Main article:
1059:
1058:United Kingdom
1056:
1052:Malaysia Boleh
1023:
1020:
979:
976:
955:
952:
941:
940:
937:
934:
930:
929:
926:
923:
919:
918:
915:
912:
908:
907:
904:
901:
897:
896:
893:
890:
886:
885:
882:
879:
875:
874:
871:
868:
864:
863:
860:
857:
853:
852:
849:
846:
842:
841:
838:
835:
831:
830:
827:
824:
823:Channel Number
797:
794:
784:
781:
773:Latrobe Valley
752:
749:
746:
745:
742:
739:
735:
734:
731:
728:
724:
723:
720:
717:
713:
712:
709:
706:
702:
701:
698:
695:
691:
690:
687:
684:
683:Channel Number
657:
654:
652:
649:
599:
596:
582:
579:
509:
508:
502:
492:
476:
465:
449:
442:
420:
406:
341:) (1977), and
281:
278:
251:remote control
198:
195:
190:Main article:
187:
184:
182:
179:
83:high frequency
75:two-way radios
26:
24:
14:
13:
10:
9:
6:
4:
3:
2:
7629:
7618:
7615:
7613:
7612:Radio hobbies
7610:
7608:
7605:
7603:
7600:
7598:
7595:
7594:
7592:
7576:
7571:
7570:
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7554:
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7147:
7145:
7142:
7140:
7137:
7134:
7133:DAT Solutions
7131:
7129:
7126:
7124:
7121:
7120:
7118:
7116:Organizations
7114:
7108:
7105:
7103:
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7037:
7034:
7032:
7029:
7027:
7024:
7022:
7019:
7017:
7014:
7012:
7011:BETO Junction
7009:
7008:
7006:
7004:
7000:
6990:
6987:
6985:
6982:
6980:
6977:
6975:
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6834:
6832:
6829:
6827:
6824:
6822:
6819:
6815:
6812:
6811:
6810:
6809:C.H. Robinson
6807:
6805:
6802:
6800:
6799:
6795:
6794:
6792:
6789:
6785:
6779:
6778:
6774:
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6717:
6713:
6711:
6708:
6706:
6703:
6702:
6700:
6698:
6694:
6688:
6687:WTI Transport
6685:
6683:
6680:
6678:
6675:
6673:
6670:
6668:
6665:
6663:
6660:
6658:
6655:
6653:
6652:PAM Transport
6650:
6648:
6645:
6643:
6640:
6638:
6635:
6633:
6630:
6628:
6625:
6623:
6620:
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6608:
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6597:
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6536:
6533:
6531:
6528:
6527:
6525:
6521:
6515:
6512:
6510:
6507:
6505:
6504:Mercedes-Benz
6502:
6500:
6497:
6495:
6492:
6490:
6487:
6485:
6482:
6480:
6477:
6476:
6474:
6470:
6464:
6461:
6459:
6458:
6454:
6452:
6449:
6447:
6446:
6445:Ward LaFrance
6442:
6440:
6437:
6435:
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6430:
6427:
6425:
6424:
6420:
6418:
6415:
6413:
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6408:
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6398:
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6386:
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6380:
6376:
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6364:
6362:
6359:
6357:
6354:
6352:
6349:
6347:
6344:
6342:
6341:
6337:
6335:
6334:Mercedes-Benz
6332:
6330:
6329:
6325:
6323:
6320:
6318:
6315:
6313:
6312:International
6310:
6308:
6305:
6303:
6300:
6298:
6295:
6293:
6290:
6288:
6287:
6283:
6281:
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6232:
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6206:
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6177:
6175:
6172:
6170:
6169:
6165:
6163:
6160:
6159:
6157:
6153:
6150:
6148:Manufacturers
6146:
6140:
6137:
6135:
6132:
6130:
6127:
6125:
6122:
6120:
6117:
6115:
6112:
6110:
6107:
6105:
6102:
6101:
6099:
6095:
6091:
6087:
6081:
6077:
6070:
6065:
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6051:
6050:
6047:
6035:
6032:
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6027:
6025:
6022:
6020:
6017:
6015:
6012:
6010:
6007:
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6002:
6000:
5997:
5995:
5992:
5990:
5987:
5985:
5982:
5980:
5977:
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5972:
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5958:
5952:
5949:
5947:
5944:
5942:
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5934:
5932:
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5927:
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5919:
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5914:
5912:
5909:
5908:
5906:
5904:
5898:
5892:
5889:
5887:
5884:
5882:
5879:
5877:
5874:
5872:
5869:
5868:
5866:
5862:
5856:
5855:Walkie-talkie
5853:
5851:
5848:
5846:
5843:
5841:
5838:
5836:
5833:
5831:
5828:
5826:
5825:Business band
5823:
5821:
5818:
5817:
5815:
5809:
5803:
5800:
5798:
5795:
5793:
5790:
5788:
5785:
5783:
5780:
5778:
5775:
5773:
5770:
5768:
5765:
5764:
5762:
5756:
5750:
5747:
5745:
5742:
5740:
5737:
5735:
5732:
5730:
5727:
5725:
5722:
5720:
5717:
5715:
5712:
5710:
5707:
5705:
5702:
5700:
5697:
5695:
5694:Amateur radio
5692:
5691:
5689:
5685:
5681:
5680:Two-way radio
5674:
5669:
5667:
5662:
5660:
5655:
5654:
5651:
5639:
5631:
5629:
5621:
5619:
5611:
5609:
5599:
5598:
5595:
5588:
5584:
5582:
5579:
5577:
5574:
5572:
5569:
5567:
5564:
5560:
5557:
5555:
5552:
5551:
5549:
5547:
5544:
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5541:
5537:
5531:
5528:
5526:
5523:
5521:
5518:
5516:
5513:
5511:
5508:
5506:
5503:
5501:
5498:
5496:
5493:
5491:
5488:
5486:
5483:
5482:
5480:
5478:
5474:
5468:
5465:
5463:
5460:
5458:
5455:
5453:
5450:
5448:
5445:
5443:
5440:
5438:
5435:
5433:
5430:
5428:
5425:
5423:
5420:
5418:
5415:
5413:
5410:
5408:
5405:
5404:
5402:
5400:
5396:
5390:
5387:
5385:
5382:
5380:
5377:
5375:
5372:
5370:
5367:
5366:
5364:
5360:
5354:
5353:Code-division
5351:
5349:
5346:
5344:
5341:
5339:
5338:Time-division
5336:
5334:
5331:
5329:
5326:
5325:
5323:
5321:
5317:
5311:
5308:
5304:
5301:
5299:
5296:
5295:
5294:
5291:
5287:
5284:
5283:
5282:
5279:
5277:
5274:
5272:
5269:
5268:
5266:
5264:and switching
5262:
5258:
5250:
5247:
5246:
5245:
5242:
5238:
5235:
5234:
5233:
5230:
5228:
5225:
5223:
5220:
5216:
5215:optical fiber
5213:
5212:
5211:
5208:
5206:
5205:Coaxial cable
5203:
5202:
5200:
5198:
5192:
5186:
5183:
5181:
5178:
5176:
5173:
5171:
5168:
5166:
5163:
5161:
5158:
5156:
5153:
5151:
5148:
5146:
5143:
5141:
5138:
5136:
5133:
5131:
5128:
5126:
5123:
5121:
5120:Radia Perlman
5118:
5116:
5113:
5111:
5108:
5106:
5103:
5101:
5098:
5096:
5093:
5091:
5088:
5086:
5083:
5081:
5078:
5076:
5073:
5071:
5068:
5066:
5063:
5061:
5058:
5056:
5053:
5051:
5048:
5046:
5043:
5041:
5038:
5036:
5033:
5031:
5028:
5026:
5023:
5021:
5018:
5016:
5013:
5011:
5010:Lee de Forest
5008:
5006:
5005:Thomas Edison
5003:
5001:
4998:
4996:
4995:Donald Davies
4993:
4991:
4988:
4986:
4983:
4981:
4980:Claude Chappe
4978:
4976:
4973:
4971:
4968:
4966:
4963:
4961:
4958:
4956:
4953:
4951:
4948:
4946:
4943:
4941:
4938:
4936:
4933:
4931:
4928:
4926:
4923:
4921:
4918:
4916:
4913:
4911:
4908:
4907:
4905:
4901:
4895:
4892:
4890:
4887:
4885:
4882:
4880:
4877:
4873:
4870:
4868:
4865:
4864:
4863:
4860:
4858:
4857:
4853:
4851:
4848:
4845:
4842:
4840:
4837:
4835:
4832:
4830:
4827:
4825:
4824:Smoke signals
4822:
4818:
4815:
4813:
4810:
4808:
4805:
4804:
4803:
4802:Semiconductor
4800:
4796:
4793:
4792:
4791:
4788:
4786:
4783:
4781:
4778:
4776:
4773:
4771:
4768:
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4758:
4756:
4753:
4751:
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4711:
4709:
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4699:
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4694:
4691:
4689:
4686:
4682:
4679:
4677:
4674:
4672:
4669:
4667:
4664:
4663:
4662:
4661:Digital media
4659:
4655:
4652:
4650:
4647:
4645:
4642:
4640:
4637:
4636:
4635:
4632:
4630:
4627:
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4617:
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4610:
4607:
4605:
4602:
4601:
4599:
4597:
4593:
4589:
4582:
4577:
4575:
4570:
4568:
4563:
4562:
4559:
4549:
4543:
4539:
4535:
4534:King, Stephen
4529:
4526:
4513:
4509:
4505:
4499:
4496:
4483:
4479:
4473:
4470:
4465:
4459:
4444:
4440:
4434:
4431:
4416:
4409:
4403:
4400:
4387:
4383:
4382:www.qrz11.com
4379:
4373:
4370:
4365:
4359:
4340:
4333:
4327:
4324:
4311:
4307:
4303:
4297:
4294:
4281:
4277:
4273:
4267:
4264:
4251:
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4243:
4237:
4234:
4228:
4225:
4220:
4216:
4210:
4207:
4193:
4189:
4183:
4180:
4167:
4163:
4159:
4153:
4150:
4145:
4143:9781418012625
4139:
4135:
4131:
4124:
4121:
4113:
4106:
4100:
4097:
4084:
4080:
4076:
4070:
4067:
4054:
4050:
4046:
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4037:
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4017:
4011:
4009:
4005:
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3988:
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3958:
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3914:
3898:
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3807:
3803:
3797:
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3778:
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3640:
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3599:
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3508:
3502:
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3490:
3484:
3481:
3468:
3464:
3460:
3454:
3451:
3446:
3442:
3436:
3433:
3428:
3426:0-8019-6623-X
3422:
3418:
3411:
3409:
3407:
3403:
3398:
3394:
3393:
3388:
3381:
3378:
3366:
3362:
3359:Adams, Greg.
3355:
3352:
3339:
3333:
3330:
3326:
3321:
3318:
3313:
3312:
3307:
3300:
3297:
3285:
3281:
3275:
3272:
3267:
3263:
3256:
3254:
3250:
3245:
3238:
3235:
3222:
3218:
3212:
3209:
3197:
3193:
3187:
3184:
3179:
3177:0-939780-07-0
3173:
3169:
3162:
3160:
3158:
3156:
3152:
3139:
3135:
3129:
3126:
3121:
3115:
3099:
3095:
3091:
3084:
3081:
3075:
3067:
3061:
3058:
3052:
3049:
3043:
3040:
3036:
3030:
3027:
3021:
3018:
3012:
3009:
3003:
3000:
2993:
2989:
2986:
2984:
2981:
2980:
2976:
2974:
2972:
2971:North America
2968:
2964:
2963:
2957:
2955:
2951:
2947:
2942:
2940:
2936:
2932:
2928:
2924:
2920:
2919:
2914:
2910:
2906:
2898:
2896:
2894:
2890:
2886:
2885:
2875:
2873:
2870:
2866:
2865:10 meter
2861:
2859:
2854:
2849:
2846:
2845:10 meter
2841:
2837:
2832:
2829:
2823:
2819:
2817:
2813:
2812:10-meter band
2804:
2802:
2800:
2796:
2791:
2788:
2784:
2780:
2774:
2766:
2764:
2762:
2756:
2753:
2749:
2744:
2740:
2737:
2736:loading coils
2728:
2723:
2716:
2711:
2708:
2705:
2702:
2699:
2696:
2694:
2690:
2689:piezoelectric
2686:
2683:
2680:
2679:
2678:
2676:
2669:
2667:
2663:
2659:
2656:
2653:
2649:
2646:
2643:
2640:
2637:
2634:
2630:
2627:
2626:noise blanker
2623:
2622:
2621:
2618:
2616:
2612:
2608:
2603:
2599:
2595:
2591:
2590:Walkie-talkie
2587:
2583:
2575:
2573:
2569:
2567:
2563:
2559:
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2178:
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2100:
2097:
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2027:
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2021:
2020:
2016:
2013:
2010:
2007:
2006:
2002:
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1996:
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1985:
1982:
1979:
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1971:
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1672:
1671:
1667:
1662:This section
1660:
1656:
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1644:
1637:
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1632:
1629:
1627:
1624:
1621:
1619:
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1234:
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1224:
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1200:
1197:
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1192:
1189:
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1181:
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1177:
1173:
1167:
1165:
1160:
1158:
1154:
1150:
1146:
1138:
1136:
1134:
1130:
1126:
1117:
1115:
1113:
1108:
1106:
1102:
1097:
1095:
1091:
1086:
1084:
1080:
1076:
1072:
1065:
1057:
1055:
1053:
1049:
1045:
1041:
1036:
1035:
1032:rules of the
1030:
1021:
1019:
1017:
1013:
1009:
1005:
1001:
997:
993:
989:
985:
977:
975:
973:
968:
965:
961:
953:
947:
938:
935:
932:
931:
927:
924:
921:
920:
916:
913:
910:
909:
905:
902:
899:
898:
894:
891:
888:
887:
883:
880:
877:
876:
872:
869:
866:
865:
861:
858:
855:
854:
850:
847:
844:
843:
839:
836:
833:
832:
828:
825:
822:
821:
815:
813:
809:
803:
795:
793:
790:
782:
780:
778:
774:
770:
766:
762:
758:
750:
743:
740:
737:
736:
732:
729:
726:
725:
721:
718:
715:
714:
710:
707:
704:
703:
699:
696:
693:
692:
688:
685:
682:
681:
675:
672:
666:
664:
655:
650:
648:
646:
640:
636:
634:
630:
626:
621:
620:sunspot cycle
617:
613:
609:
605:
604:mobile phones
597:
595:
593:
588:
580:
578:
575:
574:business band
570:
566:
564:
560:
554:
552:
548:
547:NBC Knowledge
544:
540:
536:
532:
527:
525:
522:, the former
521:
513:
506:
503:
500:
496:
493:
490:
489:
484:
480:
477:
474:
470:
466:
463:
460:
459:
454:
450:
447:
443:
440:
436:
432:
428:
427:country music
424:
421:
418:
417:Me and ol' CB
414:
413:Country music
410:
407:
404:
400:
396:
393:
390:
389:BBC Radio One
386:
384:
379:
375:
371:
368:
367:
366:
364:
363:
358:
357:
352:
351:
346:
345:
340:
336:
335:
334:Citizens Band
330:
329:
324:
323:
317:
315:
310:
306:
301:
299:
295:
291:
287:
279:
277:
275:
271:
267:
263:
259:
258:truck drivers
254:
252:
248:
244:
243:VHF high band
240:
236:
232:
227:
223:
219:
216:
212:
203:
196:
193:
186:United States
185:
180:
178:
176:
170:
168:
162:
160:
156:
152:
148:
144:
140:
136:
133:, and in the
132:
128:
124:
118:
116:
112:
108:
104:
100:
96:
92:
88:
84:
80:
76:
72:
68:
64:
56:
48:
41:
37:
32:
19:
7574:
7550:
7532:
7527:Rig 'n' Roll
7525:
7518:
7511:
7504:
7469:Dale Sommers
7354:
7347:
7340:
7333:
7326:
7319:
7301:
7294:
7287:
7280:
7273:
7266:
7261:Over The Top
7259:
7252:
7245:
7240:High-Ballin'
7238:
7231:
7224:
7217:
7210:
7203:
7196:
6814:Freightquote
6796:
6775:
6761:Southeastern
6751:R+L Carriers
6738:
6721:
6714:
6642:Knight-Swift
6609:
6455:
6451:Western Star
6443:
6421:
6399:
6377:
6370:
6338:
6326:
6284:
6270:Freightliner
6250:
6243:
6236:
6229:
6207:
6190:
6178:
6166:
5941:Quik-Call II
5931:Push-to-talk
5901:Signaling /
5830:Mobile radio
5820:Base station
5703:
5320:Multiplexing
5195:Transmission
5160:Nikola Tesla
5150:Henry Sutton
5105:Samuel Morse
5035:Robert Hooke
5000:Amos Dolbear
4935:John Bardeen
4854:
4834:Telautograph
4738:Mobile phone
4693:Edholm's law
4676:social media
4609:Broadcasting
4537:
4528:
4516:. Retrieved
4507:
4498:
4486:. Retrieved
4482:the original
4472:
4447:. Retrieved
4433:
4422:. Retrieved
4402:
4390:. Retrieved
4381:
4372:
4346:. Retrieved
4326:
4314:. Retrieved
4306:swap.qth.com
4305:
4296:
4284:. Retrieved
4276:www.arrl.org
4275:
4266:
4254:. Retrieved
4245:
4236:
4227:
4219:the original
4209:
4196:. Retrieved
4182:
4170:. Retrieved
4166:the original
4161:
4152:
4133:
4123:
4112:the original
4099:
4087:. Retrieved
4078:
4069:
4057:. Retrieved
4048:
4039:
4027:. Retrieved
4018:
3995:. Retrieved
3986:
3977:
3965:. Retrieved
3961:the original
3956:
3946:
3934:. Retrieved
3925:
3916:
3904:. Retrieved
3884:
3872:. Retrieved
3865:the original
3856:
3850:
3838:. Retrieved
3826:
3814:
3806:the original
3796:
3784:. Retrieved
3777:the original
3764:
3755:
3749:
3737:. Retrieved
3732:
3723:
3711:. Retrieved
3706:
3697:
3685:. Retrieved
3680:
3656:. Retrieved
3651:
3642:
3630:. Retrieved
3625:
3616:
3608:the original
3598:
3589:
3577:. Retrieved
3572:
3563:
3555:the original
3545:
3537:the original
3527:
3515:. Retrieved
3510:
3501:
3493:the original
3483:
3471:. Retrieved
3462:
3453:
3435:
3416:
3397:the original
3390:
3380:
3368:. Retrieved
3364:
3354:
3342:. Retrieved
3332:
3320:
3309:
3299:
3287:. Retrieved
3283:
3274:
3261:
3243:
3237:
3225:. Retrieved
3221:the original
3211:
3200:. Retrieved
3198:. 2020-06-25
3195:
3186:
3167:
3142:. Retrieved
3128:
3102:. Retrieved
3093:
3083:
3065:
3060:
3051:
3042:
3029:
3020:
3011:
3002:
2960:
2958:
2946:Stephen King
2943:
2938:
2934:
2930:
2922:
2916:
2912:
2908:
2904:
2902:
2882:
2879:
2868:
2862:
2850:
2840:Yaesu FT-101
2833:
2824:
2820:
2808:
2792:
2776:
2761:counterpoise
2757:
2748:ground plane
2745:
2741:
2732:
2727:loading coil
2673:
2651:transmitter)
2619:
2582:vacuum tubes
2579:
2570:
2555:
2539:
2531:
2527:
2510:
2498:
2494:
2478:
2472:
2466:
2458:South Africa
2456:
1874:
1873:
1862:
1856:
1811:
1797:
1793:
1790:
1773:
1769:
1765:
1754:
1739:
1724:
1714:
1699:
1693:October 2015
1690:
1675:Please help
1663:
1633:
1625:
1617:
1609:
1601:
1556:
1552:
1549:
1161:
1142:
1121:
1109:
1105:Packet radio
1098:
1087:
1070:
1067:
1051:
1037:
1033:
1025:
1015:
981:
969:
957:
805:
786:
756:
754:
744:LSB Call DX
667:
659:
641:
637:
601:
584:
571:
567:
555:
546:
529:Voice actor
528:
518:
495:"Teddy Bear"
486:
483:country rock
461:
457:
445:
434:
425:, a novelty
402:
399:Paul Burnett
382:
374:novelty song
370:C. W. McCall
360:
354:
349:
343:
338:
332:
326:
320:
318:
302:
283:
255:
220:
208:
171:
163:
123:push to talk
119:
66:
62:
61:
7498:Video games
7428:Phantom 309
7087:Jimmy Hoffa
7077:Iyman Faris
7041:Road Ranger
7003:Truck stops
6479:Caterpillar
6412:Tiger Truck
6385:Shyft Group
6238:Diamond Reo
6203:Caterpillar
6097:Regulations
6024:Tone remote
6014:Link budget
6009:Fade margin
5936:Quik-Call I
5520:NPL network
5232:Radio waves
5170:Alfred Vail
5080:Hedy Lamarr
5065:Dawon Kahng
5025:Elisha Gray
4985:Yogen Dalal
4910:Nasir Ahmed
4844:Teleprinter
4708:Heliographs
3632:31 December
3144:10 February
2905:S9 CB Radio
2853:gray market
2586:transistors
2507:Current use
2501:Philippines
1869:80 channels
1799:New Zealand
1085:in London.
614:. Changing
543:Los Angeles
479:The Outlaws
473:Johnny Cash
431:Jay Huguely
411:'s novelty
409:Dave Dudley
298:speed traps
262:solid-state
157:when using
145:when using
7591:Categories
7448:Teddy Bear
7408:Giddyup Go
7313:Television
7102:Kelly Reno
6954:Interstate
6637:J. B. Hunt
6545:Great Dane
6366:Ram Trucks
6162:AM General
5734:Mobile rig
5566:Antarctica
5525:Toasternet
5447:Television
4930:Paul Baran
4862:Television
4846:(teletype)
4839:Telegraphy
4817:transistor
4795:Phryctoria
4765:Photophone
4743:Smartphone
4733:Mass media
4449:2015-03-10
4424:2015-03-10
4188:"Raytheon"
3967:22 October
3906:19 January
3874:19 January
3840:1 November
3802:"CB Radio"
3533:"Movement"
3370:11 October
3344:11 October
3227:21 October
3217:"Overview"
3202:2020-07-06
3076:References
2927:RadioShack
2826:include a
2783:ionosphere
2675:Microphone
2576:Technology
1891:Frequency
1885:Frequency
1596:Frequency
1561:Eurobalise
1214:Frequency
1206:Frequency
1198:Frequency
1190:Frequency
1182:Frequency
1151:) and the
1131:(AM), and
996:Yogyakarta
800:See also:
551:chat rooms
520:Betty Ford
499:Red Sovine
284:After the
253:devices).
7607:Bandplans
7488:Dave Nemo
7478:Bill Mack
7418:Movin' On
7349:Movin' On
7205:Breakdown
7198:Black Dog
7092:John Hunt
7056:Town Pump
6959:Mayflower
6901:LaserShip
6870:Greyhound
6841:XPO, Inc.
6821:CaseStack
6790:providers
6771:XPO, Inc.
6667:Schneider
6596:Truckload
6499:MaxxForce
6429:UD Trucks
6361:Peterbilt
6245:Diamond T
6215:Chevrolet
5994:DC remote
5984:Call sign
5758:Aviation
5550:Americas
5539:Locations
5510:Internet2
5271:Bandwidth
4975:Vint Cerf
4872:streaming
4850:Telephone
4790:Semaphore
4681:streaming
4538:The Stand
4510:. Italy.
4198:21 August
3997:8 October
3786:3 January
3713:1 January
3687:1 January
3658:1 January
3579:1 January
3517:1 January
3037:standard.
2935:CB Action
2755:antenna.
2693:impedance
2547:harmonics
1858:Indonesia
1664:does not
1590:Frequency
1584:Frequency
1578:Frequency
1572:Frequency
1162:See also
984:Indonesia
978:Indonesia
769:Gippsland
751:Community
663:QSL cards
651:Australia
531:Mel Blanc
458:Billboard
383:Billboard
350:Movin' On
153:and 12 W
87:shortwave
7247:Joy Ride
7233:F.I.S.T.
6964:National
6853:carriers
6622:Covenant
6598:carriers
6565:Vanguard
6540:Fruehauf
6535:Fontaine
6401:Sterling
6340:Moreland
6322:Kenworth
6198:BYD Auto
6192:Brockway
5999:Dispatch
5926:MDC-1200
5871:2182 kHz
5792:MULTICOM
5618:Category
5505:Internet
5495:CYCLADES
5412:Ethernet
5362:Concepts
5286:terminal
5237:wireless
5060:Bob Kahn
4903:Pioneers
4728:Internet
4619:Cable TV
4536:(2012).
4512:Archived
4488:10 March
4458:cite web
4443:Archived
4415:Archived
4386:Archived
4358:cite web
4339:Archived
4310:Archived
4280:Archived
4250:Archived
4246:IC.GC.ca
4192:Archived
4083:Archived
4077:. News.
4053:Archived
4023:Archived
3991:Archived
3930:Archived
3897:Archived
3831:Archived
3467:Archived
3445:Archived
3365:Allmusic
3138:Archived
3114:cite web
3098:Archived
2977:See also
2954:Colorado
2889:QSL card
2876:Callbook
2816:splatter
2717:Antennas
2594:crystals
1888:Channel
1882:Channel
1079:Al Gross
1022:Malaysia
1008:VHF band
1000:Surabaya
829:Purpose
689:Purpose
610:and the
608:internet
592:Motorola
505:Rod Hart
362:CB Bears
337:(a.k.a.
331:(1977),
325:(1977),
309:callsign
294:truckers
270:ten-code
266:CB slang
215:Al Gross
137:and the
109:and the
67:CB radio
40:DC power
36:AC power
7575:italics
7474:Red Eye
7296:Trucker
7046:Roady's
7026:Iowa 80
6989:Wheaton
6611:Celadon
6484:Cummins
6423:Traffic
6395:Spartan
6379:Schacht
6356:Oshkosh
6186:Bremach
6174:Autocar
5969:Antenna
5946:Selcall
5876:500 kHz
5777:Airband
5724:KDR 444
5638:Commons
5628:Outline
5581:Oceania
5500:FidoNet
5485:ARPANET
5298:circuit
4867:digital
4596:History
4378:"QRZ11"
4348:19 June
3463:fcc.gov
3268:. 2011.
2950:Boulder
2893:QRZ.com
2795:sunspot
2787:skywave
2773:Skywave
2767:Skywave
2499:In the
2474:Germany
2468:Hungary
2451:27.855
2445:27.405
2437:27.845
2431:27.395
2423:27.835
2417:27.385
2409:27.825
2403:27.375
2395:27.815
2389:27.365
2381:27.805
2375:27.355
2367:27.795
2361:27.345
2353:27.785
2347:27.335
2339:27.775
2333:27.325
2325:27.765
2319:27.315
2311:27.755
2305:27.305
2297:27.745
2291:27.295
2283:27.735
2277:27.285
2269:27.725
2263:27.275
2255:27.715
2249:27.265
2241:27.695
2235:27.245
2227:27.685
2221:27.235
2213:27.705
2207:27.255
2199:27.675
2193:27.225
2185:27.665
2179:27.215
2171:27.655
2165:27.205
2157:27.635
2151:27.185
2143:27.625
2137:27.175
2129:27.615
2123:27.165
2115:27.605
2109:27.155
2101:27.585
2095:27.135
2087:27.575
2081:27.125
2073:27.565
2067:27.115
2059:27.555
2053:27.105
2045:27.535
2039:27.085
2031:27.525
2025:27.075
2017:27.515
2011:27.065
2003:27.505
1997:27.055
1989:27.485
1983:27.035
1975:27.475
1969:27.025
1961:27.465
1955:27.015
1947:27.455
1941:27.005
1933:27.435
1927:26.985
1919:27.425
1913:26.975
1905:27.415
1899:26.965
1774:In it:
1746:Germany
1685:removed
1670:sources
1645:SSB use
1593:Channel
1587:Channel
1581:Channel
1575:Channel
1569:Channel
1044:Digital
1029:simplex
992:Bandung
988:Jakarta
656:History
464:charts.
385:Hot 100
314:antenna
197:Origins
181:History
69:) is a
7388:Convoy
7219:Convoy
7065:People
7031:Love's
6984:United
6949:Global
6939:Bekins
6929:Allied
6911:OnTrac
6677:Werner
6575:Wilson
6530:Daseke
6509:Paccar
6417:Toyota
6372:Selden
6351:Nissan
6180:Bering
5951:SELCAL
5916:D-STAR
5802:UNICOM
5744:PMR446
5729:LPD433
5576:Europe
5546:Africa
5530:Usenet
5490:BITNET
5427:Mobile
5303:packet
4812:MOSFET
4807:device
4604:Beacon
4544:
4140:
3739:30 May
3423:
3244:Signal
3174:
2923:RADIO!
2617:sets.
2535:"skip"
1865:Brazil
1761:Poland
1757:Russia
1157:Europe
1127:(FM),
1040:analog
1012:UHF CB
962:, the
960:Canada
954:Canada
789:UHF CB
741:27.355
730:27.155
719:27.085
708:27.065
697:27.055
671:UHF CB
606:, the
537:" or "
378:Convoy
344:Convoy
237:. The
175:PMR446
131:Canada
107:UHF CB
7544:Other
7462:Radio
7366:Music
6934:Atlas
6865:FedEx
6826:Ryder
6734:FedEx
6672:Swift
6514:Volvo
6457:White
6439:Volvo
6407:Tesla
6390:Smith
6317:Isuzu
6307:Hyzon
6286:Hayes
6265:Dodge
6209:Chase
5911:CTCSS
5559:South
5554:North
5515:JANET
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5442:Radio
5281:Nodes
5276:Links
5197:media
4775:Radio
4760:Pager
4688:Drums
4654:video
4649:image
4639:audio
4518:8 May
4418:(PDF)
4411:(PDF)
4392:8 May
4342:(PDF)
4335:(PDF)
4316:8 May
4286:8 May
4256:8 May
4172:8 May
4115:(PDF)
4108:(PDF)
4089:8 May
4059:8 May
4029:8 May
3936:8 May
3900:(PDF)
3893:(PDF)
3868:(PDF)
3861:(PDF)
3834:(PDF)
3823:(PDF)
3780:(PDF)
3773:(PDF)
3473:8 May
3289:8 May
3104:8 May
2994:Notes
2899:Media
2869:other
2631:CB /
2551:spurs
2514:hobby
2462:ICASA
1803:Japan
1557:after
1553:after
1101:Ofcom
1004:Medan
936:27.82
925:27.72
914:27.98
903:27.96
892:27.94
881:27.91
859:27.68
848:27.86
837:27.88
539:Daffy
485:song
471:" by
415:song
143:watts
115:"ham"
7226:Duel
7190:Film
6974:PODS
6756:Saia
6627:CRST
6494:Mack
6346:Mack
6297:Hino
6292:Fuso
6275:Ford
6260:Dina
6231:Dart
5974:APRS
5571:Asia
5457:UUCP
5417:ISDN
4542:ISBN
4520:2018
4490:2015
4464:link
4394:2018
4364:link
4350:2009
4318:2018
4288:2018
4258:2018
4200:2009
4174:2018
4138:ISBN
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4061:2018
4031:2018
3999:2015
3969:2011
3938:2018
3908:2018
3876:2018
3842:2004
3788:2010
3741:2024
3715:2019
3689:2019
3660:2019
3634:2018
3581:2019
3519:2019
3475:2018
3421:ISBN
3372:2023
3346:2023
3291:2018
3229:2011
3172:ISBN
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3120:link
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3035:CEPT
2925:for
2907:and
2664:and
2549:and
2487:and
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1801:and
1759:and
1740:The
1668:any
1666:cite
1515:*24
1475:*23
1467:*15
1315:*19
1307:*11
1243:*25
1211:Ch.
1203:Ch.
1195:Ch.
1187:Ch.
1179:Ch.
1153:CEPT
1002:and
964:CRTC
870:27.9
535:Bugs
439:1976
397:and
149:and
129:and
103:MURS
99:GMRS
6906:LSO
6896:GLS
6875:UPS
6860:DHL
6705:ABF
6617:CFI
6434:VIA
6280:GMC
6252:Reo
6220:CCC
5989:CAD
5462:WAN
5432:NGN
5422:LAN
4703:Fax
4644:DCT
2944:In
2913:S9’
2752:ohm
2658:SWR
2607:PLL
2562:SSB
2558:PEP
2448:80
2442:40
2434:79
2428:39
2420:78
2414:38
2406:77
2400:37
2392:76
2386:36
2378:75
2372:35
2364:74
2358:34
2350:73
2344:33
2336:72
2330:32
2322:71
2316:31
2308:70
2302:30
2294:69
2288:29
2280:68
2274:28
2266:67
2260:27
2252:66
2246:26
2238:65
2232:25
2224:64
2218:24
2210:63
2204:23
2196:62
2190:22
2182:61
2176:21
2168:60
2162:20
2154:59
2148:19
2140:58
2134:18
2126:57
2120:17
2112:56
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2092:15
2084:54
2078:14
2070:53
2064:13
2056:52
2050:12
2042:51
2036:11
2028:50
2022:10
2014:49
2000:48
1986:47
1972:46
1958:45
1944:44
1930:43
1916:42
1902:41
1863:In
1755:In
1679:by
1634:15A
1626:11A
1618:19A
1531:40
1523:32
1507:16
1491:39
1483:31
1459:*7
1451:38
1443:30
1435:22
1427:14
1411:37
1403:29
1395:21
1387:13
1371:36
1363:28
1355:20
1347:12
1331:35
1323:27
1299:*3
1291:34
1283:26
1275:18
1267:10
1251:33
1235:17
1172:FCC
1159:).
1149:USA
1145:FCC
1054:).
982:In
958:In
497:by
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392:DJs
372:'s
159:SSB
155:PEP
95:FRS
85:or
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