450:
251:
768:
structured with a two letter prefix, a digit (which identifies geographical area), and a 2, 3 or 4 letter suffix. This suffix may be followed by a further suffix, or personal identifier, such as /P (portable), /M (mobile), /AM (aeronautical mobile) or /MM (maritime mobile). The number following the prefix is normally a single number (0 to 9). Some prefixes, such as
Djibouti's (J2), consist of a letter followed by a number. Hence, in the hypothetical Djibouti call sign, J29DBA, the prefix is
280:
signs beginning with "N". Originally, both ships and broadcast stations were assigned call signs in this series consisting of three or four letters. Ships equipped with Morse code radiotelegraphy, or life boat radio sets, aviation ground stations, broadcast stations were given four-letter call signs. Maritime coast stations on high frequency (both radiotelegraphy and radiotelephony) were assigned three-letter call signs. As demand for both
367:, and instead use the name of the aircraft manufacturer or the specific model. At times, general aviation pilots might omit additional preceding numbers and use only the last three numbers and letters. This is especially true at uncontrolled fields (those without control towers) when reporting traffic pattern positions or at towered airports after establishing two-way communication with the tower controller. For example,
1055:
4562:
750:
36:
4572:
4551:
4582:
943:. Within a standard infantry battalion, these characters represent companies, platoons and sections respectively, so that 3 Section, 1 Platoon of F Company might be F13. In addition, a suffix following the initial call sign can denote a specific individual or grouping within the designated call sign, so F13C would be the Charlie
296:
small boats have a number that is shown on both bows (i.e. port and starboard) in which the first two digits indicate the nominal length of the boat in feet. For example, Coast Guard 47021 refers to the 21st in the series of 47-foot motor lifeboats. The call sign might be abbreviated to the final two
434:
The only continuity in call signs for spacecraft have been the issuance of "ISS"-suffixed call signs by various countries in the amateur radio service as a citizen of their country has been assigned there. The first amateur radio call sign assigned to the
International Space Station was NA1SS by the
422:
Radio call signs used for communication in crewed spaceflight are not formalized or regulated to the same degree as for aircraft. The three nations currently launching crewed space missions use different methods to identify the ground and space radio stations; the United States uses either the names
407:
receive C-Ixxx call signs. In days gone by, even
American aircraft used five-letter call signs, such as KHâABC, but they were replaced prior to World War II by the current American system of civilian aircraft call signs (see below). One exception to the parallelism between registration and call sign
390:
In most countries, the aircraft call sign or "tail number"/"tail letters" (also known as registration marks) are linked to the international radio call sign allocation table and follow a convention that aircraft radio stations (and, by extension, the aircraft itself) receive call signs consisting of
279:
for ship registration, call signs for larger vessels consist of the national prefix plus three letters (for example, 3LXY, and sometimes followed by a number, e.g. 3LXY2). United States merchant vessels are given call signs beginning with the letters "W" or "K" while US naval ships are assigned call
663:
In South
America call signs have been a traditional way of identifying radio and TV stations. Some stations still broadcast their call signs a few times a day, but this practice is becoming very rare. Argentinian broadcast call signs consist of two or three letters followed by multiple numbers, the
592:
in
Chicago. American radio stations announce their call signs (except for rare cases in which would interfere with the broadcast of very long works of classical or opera music) at or near the top of each hour, as well as sign-on and sign-off for stations that do not broadcast 24 hours. Beginning in
1026:
International regulations no longer require a call sign for broadcast stations; however, they are still required for broadcasters in many countries, including the United States. Mobile phone services do not use call signs on-air because the phones and their users are not licensed, instead the cell
783:
When operating with reciprocal agreements under the jurisdiction of a foreign government, an identifying station pre-pends the call sign with the country prefix and number of the country/territory from which the operation is occurring. For example, W4/G3ABC would denote a licensed amateur from the
1073:
to an operator with whom they have communicated via radio. Callbooks have evolved to include on-line 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 databases include
767:
call signs are in the international series and normally consist of a one or two character prefix, a digit (which may be used to denote a geographical area, class of license, or identify a licensee as a visitor or temporary resident), and a 1-, 2-, or 3-letter suffix. In
Australia, call signs are
483:
105" or "the ABC network" are not globally unique. Another station in another city or country may (and often will) have a similar brand, and the name of a broadcast station for legal purposes is normally its internationally recognised ITU call sign. Some common conventions are followed in each
315:
Originally aviation mobile stations (aircraft) equipped with radiotelegraphy were assigned five-letter call signs (e.g. KHAAQ). Land stations in aviation were assigned four-letter call signs (e.g. WEAL – Eastern Air Lines, NYC.) These call signs were phased out in the 1960s when
784:
United
Kingdom who is operating in the fourth district of the United States. There are exceptions; in the case of U.S./Canadian reciprocal operations, the country/territory identifier is, instead, appended to the call sign; e.g., W1AW/VE4, or VE3XYZ/W1.
722:
Most
European and Asian countries do not use call signs to identify broadcast stations, but Japan, South Korea, Indonesia, the Philippines and Taiwan do have call sign systems. Spanish broadcasters used call signs consisting of
1093:
291:
class SA: "Ship recreational or voluntarily equipped." Those calls follow the land mobile format of the initial letter K or W followed by 1 or 2 letters followed by 3 or 4 numbers (such as KX0983 or WXX0029).
1482:
a database of international telecommunications administrations, searchable by callsign, covering AM, FM, DAB and TV in the United States, Canada, Mexico, the United
Kingdom, Ireland, Japan and Australia
487:
Broadcast stations in North America generally use call signs in the international series. In the United States of America, they are used for all FCC-licensed transmitters. The first letter generally is
1046:. Voluntary ships (mostly pleasure and recreational) are not required to have a radio. However, ships which are required to have radio equipment (most large commercial vessels) are issued a call sign.
3378:
521:
327:
are derived from several different policies, depending upon the type of flight operation and whether or not the caller is in an aircraft or at a ground facility. In most countries, unscheduled
351:. Aircraft registration numbers internationally follow the pattern of a country prefix, followed by a unique identifier made up of letters and numbers. For example, an aircraft registered as
893:
In wartime, monitoring an adversary's communications can be a valuable form of intelligence. Consistent call signs can aid in this monitoring, so in wartime, military units often employ
975:, because frequencies below 10 kHz are not subject to international regulations. In addition, in some countries lawful unlicensed low-power personal and broadcast radio signals (
287:
Leisure craft with VHF radios may not be assigned call signs, in which case the name of the vessel is used instead. Ships in the US still wishing to have a radio license are under
395:
have a five-letter registration beginning with the letter G, which can also serve for a call sign. Canadian aircraft have a call sign beginning with CâF or CâG, such as CâFABC.
1066:
and contained the name and addressees of licensed radio stations in a given jurisdiction (country). Modern Electrics published the first callbook in the United States in 1909.
991:
are unlicensed and do not have call signs. On some personal radio services, such as CB, it is considered a matter of etiquette to create one's own call sign, which is called a
987:) are permitted; an international call sign is not issued to such stations due to their unlicensed nature. Also, wireless network routers or mobile devices and computers using
1043:
947:. Unused suffixes can be used for other call signs that do not fall into the standard call sign matrix, for example the unused 33A call sign is used to refer to the
2418:
787:
Special call signs are issued in the amateur radio service either for special purposes, VIPs, or for temporary use to commemorate special events. Examples include
2239:
716:
449:
4534:
4506:
4501:
3526:
1223:
2958:
284:
and broadcast call signs grew, gradually American-flagged vessels with radiotelephony only were given longer call signs with mixed letters and numbers.
2423:
344:
1770:
1103:
1020:
819:
617:
1716:
1246:
731:; these also ceased to be used in the 1970s. Britain has no call signs in the American sense, but allows broadcast stations to choose their own
435:
United States. OR4ISS (Belgium), DP0ISS (Germany), and RS0ISS (Russia) are examples of others, but are not all-inclusive of others also issued.
4528:
423:
given to the space vehicles, or else the project name and mission number. Russia traditionally assigns code names as call signs to individual
4523:
4513:
4493:
4295:
897:
and sometimes change them at regular intervals. In peacetime, some military stations will use fixed call signs in the international series.
1554:
4518:
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664:
second and third letters indicating region. In Brazil, radio and TV stations are identified by a ZY, a third letter and three numbers.
4290:
2763:
2665:
1625:
1088:
320:(FRO) were no longer required on international flights. The Russian Federation kept FROs for the Moscow-Havana run until around 2000.
4384:
597:
288:
119:
727:
followed by two letters and up to three digits until the late 1970s. Portugal had a similar system, their callsigns beginning with
1206:
4169:
3717:
3519:
3373:
3249:
3096:
1672:
223:) was later added. By 1912, the need to quickly identify stations operated by multiple companies in multiple nations required an
4616:
4280:
3165:
1699:
250:
4275:
3826:
57:
1027:
operator is the one holding the license. However, the U.S. still assigns a call sign to each mobile-phone spectrum license.
170:. A call sign can be formally assigned by a government agency, informally adopted by individuals or organizations, or even
4300:
3383:
2812:
2799:
2380:
1655:
1515:âA search engine of all of the radio stations in the world with websites, searchable by location, frequency, and call sign
593:
the early 2000s, digital subchannels were assigned a -DT# suffix, where # is the subchannel (starting with the number 2).
267:
Merchant and naval vessels are assigned call signs by their national licensing authorities. In the case of states such as
4585:
4575:
4336:
4233:
3776:
3543:
2516:
2143:
2095:
1763:
1069:
Today, the primary purpose of a callbook is to allow amateur radio operators to send a confirmation post card, called a
100:
4565:
4072:
3512:
2621:
1821:
1730:
1679:
875:
When identifying a station by voice, the call sign may be given by simply stating the letters and numbers, or using a
72:
1485:
1178:
1062:
A directory of radio station call signs is called a callbook. Callbooks were originally bound books that resembled a
1503:
4424:
4346:
4285:
3992:
2910:
2171:
1892:
1098:
921:
219:
at sea. These were not globally unique, so a one-letter company identifier (for instance, 'M' and two letters as a
53:
3353:
1231:
46:
4196:
4157:
4002:
3902:
3831:
3764:
3591:
3222:
1723:
968:
925:
79:
4555:
3797:
3732:
3685:
3571:
3324:
3180:
2717:
2006:
1630:
1594:
1547:
1340:
1012:
964:
796:
744:
621:
259:
1469:
4394:
4379:
4223:
4174:
4097:
3997:
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3561:
3556:
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3063:
2395:
1756:
1735:
1711:
909:
86:
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4316:
4102:
3917:
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3670:
3635:
3081:
2990:
2757:
2628:
2114:
1684:
1113:
960:
948:
876:
520:
in San Antonio. All new call signs have been four-character for some decades, though there are historical
348:
317:
231:
would be used to identify a country, and the rest of the call sign an individual station in that country.
224:
203:. In order to save time, two-letter identifiers were adopted for this purpose. This pattern continued in
4218:
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3907:
3887:
3809:
3697:
3618:
2832:
1877:
1706:
1609:
417:
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332:
1366:
780:. Others may start with a number followed by a letter, for example, Jamaican call signs begin with 6Y.
68:
4132:
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3819:
3754:
3645:
3120:
2852:
2587:
1694:
1689:
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1662:
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276:
188:
139:
2827:
1518:
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4142:
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3217:
3207:
3130:
3105:
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2162:
2138:
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1645:
1640:
1577:
1540:
1133:
1063:
996:
894:
888:
872:, which would have been the shortest possible call sign issued by the Hashemite Kingdom of Jordan.
468:
Broadcasters are allocated call signs in many countries. While broadcast radio stations will often
458:
404:
310:
245:
212:
167:
2707:
4369:
4326:
4257:
4127:
4057:
4032:
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3050:
2730:
2523:
2405:
2317:
2085:
2059:
1935:
1826:
1635:
1604:
1599:
976:
972:
917:
901:
255:
408:
is ultralight airplanes in France, who are not obliged to carry a radio and indeed often don't.
1439:
Aeronautical Information Manual, Official Guide to Basic Flight Information and ATC Procedures,
4409:
4331:
4245:
4228:
4191:
4077:
4037:
3867:
3836:
3702:
3596:
3429:
3195:
2684:
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1958:
1924:
1919:
1464:
861:
804:
513:
493:
428:
192:
4414:
4374:
4354:
4321:
4250:
4208:
4122:
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3912:
3872:
3722:
3581:
3576:
3566:
3314:
3190:
3185:
3086:
3007:
2904:
2572:
2541:
2448:
2307:
2028:
1035:
1008:
936:
928:
use a mixture of tactical call signs and international call signs beginning with the letter
757:
upon request for motor vehicles owned by amateur radio operators; this road vehicle is from
469:
356:
328:
293:
1153:
4042:
3897:
3665:
3628:
3319:
3239:
3234:
3229:
3160:
3125:
3076:
3034:
2928:
2805:
2712:
2554:
2531:
2490:
2244:
2204:
2016:
1522:
1507:
1210:
847:
843:
220:
3640:
3000:
1007:
to be set as identifiers, but with no guarantee that this label will remain unique. Many
4240:
4112:
4087:
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4017:
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3727:
3613:
3212:
3175:
3054:
3046:
2985:
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2642:
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2485:
2332:
2267:
2211:
1887:
1812:
1203:
1123:
392:
208:
204:
93:
1054:
648:. Broadcast call signs are normally four or five alpha characters in length, plus the
4600:
4389:
4162:
4152:
4067:
3957:
3952:
3942:
3927:
3749:
3608:
3202:
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3029:
2918:
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2789:
2752:
2635:
2602:
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2505:
2480:
2475:
2462:
2433:
2390:
2327:
2234:
2219:
2190:
2103:
1897:
1779:
1582:
1527:
1255:
835:
764:
754:
480:
372:
196:
1459:
749:
4267:
4107:
4052:
3982:
3947:
3882:
3781:
3771:
3623:
3468:
3456:
3406:
3400:
3395:
3254:
2948:
2894:
2889:
2842:
2776:
2702:
2692:
2671:
2615:
2549:
2500:
2428:
2362:
2347:
2342:
2337:
2312:
2287:
2277:
2184:
1965:
1783:
1442:
1083:
281:
216:
171:
135:
1748:
1034:
operating domestically are not required to have a call sign or license to operate
363:. However, in the United States a pilot of an aircraft would normally omit saying
4467:
4117:
4027:
4012:
3972:
3932:
3791:
3441:
3363:
3022:
3017:
3012:
2933:
2847:
2837:
2697:
2655:
2650:
2467:
2443:
2385:
2352:
2322:
2302:
2297:
2272:
2262:
2229:
2224:
2040:
2021:
1975:
1970:
1851:
1016:
1004:
851:
35:
17:
1248:
First Annual Official Wireless Blue Book of the Wireless Association of America
959:
No call signs are issued to transmitters of the long-range navigation systems (
4472:
4179:
3877:
3786:
3742:
3712:
3690:
3680:
3655:
3434:
3417:
3358:
3338:
2995:
2923:
2870:
2866:
2794:
2610:
2577:
2510:
2413:
2357:
2179:
2133:
2090:
2045:
1996:
1929:
1909:
1872:
1846:
1802:
1797:
1108:
879:. Some countries mandate the use of the phonetic alphabet for identification.
808:
758:
732:
400:
228:
174:
163:
4457:
3922:
3737:
3446:
3309:
3071:
2963:
2723:
2438:
2121:
2055:
2001:
1948:
1943:
1816:
1490:
1128:
992:
944:
693:
549:
517:
505:
473:
424:
184:
1019:
and mobile stations (e.g., phones) by requiring them to authenticate using
1182:
715:
In Australia, broadcast call signs are optional, but are allocated by the
4452:
4442:
4359:
4184:
4007:
3463:
3451:
3412:
3390:
3281:
3170:
3115:
2938:
2737:
2197:
2150:
2109:
2080:
2068:
2011:
1991:
1953:
1914:
1500:
1454:
1070:
984:
815:
641:
629:
589:
585:
581:
577:
573:
569:
561:
557:
553:
545:
541:
537:
533:
529:
525:
501:
476:
462:
454:
324:
200:
181:
908:, such as WAR, used by U.S. Army Headquarters. Fixed call signs for the
4447:
4432:
3304:
3276:
2744:
2372:
2127:
2074:
2033:
1882:
1856:
1807:
1118:
980:
939:, tactical voice communications use a system of call signs of the form
268:
4477:
4437:
3759:
3551:
3504:
3473:
3348:
2458:
1904:
1495:
865:
637:
331:
flights identify themselves using the call sign corresponding to the
272:
1519:
Broadcasting undertaking callsigns possibly available for assignment
1344:
1094:
List of aviation, avionics, aerospace and aeronautical abbreviations
4462:
4399:
3707:
3423:
3152:
3138:
3134:
1460:
United States (FCC) Call Sign Reservation and Authorization System
1053:
1039:
988:
748:
448:
249:
180:
The use of call signs as unique identifiers dates to the landline
4404:
1298:
1159:. U.S. Department of Commerce, Bureau of Navigation. May 9, 1913
1000:
509:
3508:
1752:
1536:
1512:
3650:
604:; privately owned commercial broadcast stations use primarily
565:
500:
for eastern stations. Historic exceptions in the east include
29:
1532:
1179:"CALL SIGNS/LETTERS - The Museum of Broadcast Communications"
1370:
1392:
1213:, Titanic Wireless Commemorative Group, Godalming, Surrey
1074:
QRZ.COM, IK3QAR, HamCall, F6CYV, DXInfo, OZ7C and QSLInfo.
834:
to commemorate the 90th anniversary of historic 1912 radio
371:. In commercial aviation, the callsign is usually the ICAO
1319:
403:
in Canada are eligible to receive CâHxxx call signs, and
1413:
1224:"FCC: Wireless Services: Ship Radio Stations: Licensing"
1479:
1474:
1277:
472:
themselves with plain-text names, identities such as "
461:, indicating its early location in the U.S. state of
807:'s first trans-Atlantic message, a single-character
4486:
4423:
4345:
4309:
4266:
4207:
4141:
3850:
3542:
3297:
3269:
3151:
3062:
3043:
2976:
2865:
2775:
2683:
2601:
2563:
2540:
2457:
2404:
2371:
2286:
2253:
2170:
2159:
2054:
1984:
1865:
1839:
1790:
1618:
1570:
343:). In this case, the call sign is spoken using the
60:. Unsourced material may be challenged and removed.
297:or three numbers during operations, for example:
1455:United States Call Sign Policies (Early History)
508:in Pittsburgh, while western exceptions include
1437:United States Federal Aviation Administration,
904:uses fixed station call signs which begin with
1475:Internet Radio Uniform Callsign (IRUC) program
916:, such as AIR, used by USAF Headquarters. The
3520:
1764:
1548:
868:was issued a special amateur license number,
717:Australian Communications and Media Authority
211:initially assigned two-letter identifiers to
27:Unique designation for a transmitting station
8:
719:and are unique for each broadcast station.
4535:Global telecommunications regulation bodies
4571:
3527:
3513:
3505:
3059:
2537:
2167:
1771:
1757:
1749:
1555:
1541:
1533:
1501:Fictional Story About Military Call Signs
345:International Civil Aviation Organization
120:Learn how and when to remove this message
1104:List of government and military acronyms
1021:international mobile subscriber identity
616:prefixes; and four stations licensed to
1145:
391:five letters. For example, all British
361:November-niner-seven-eight-Charlie-Papa
672:are allocated to television stations;
1058:Department of Commerce callbook, 1919
826:as a Great Britain call sign prefix,
735:call sign up to six words in length.
369:Skyhawk eight-Charlie-Papa, left base
7:
4581:
1320:"World Wide HamCall Callsign Server"
955:Transmitters requiring no call signs
58:adding citations to reliable sources
187:system. Because there was only one
1089:Glossary of military abbreviations
971:), or transmitters on frequencies
177:to disguise a station's identity.
25:
1465:FCC amateur radio operator search
624:government retain their original
598:Canadian Broadcasting Corporation
492:for stations located west of the
431:, rather than to the spacecraft.
4580:
4570:
4561:
4560:
4549:
4170:Free-space optical communication
2419:Democratic Republic of the Congo
1299:"Qsl Manager - Qsl Info on-line"
753:All U.S. states issue call sign
34:
359:flight would use the call sign
45:needs additional citations for
1496:Another Military Callsign List
1367:"DXInfo, your DX web resource"
1258:: Modern Electrics Publication
596:In Canada, the publicly owned
397:wing-in-ground-effect vehicles
195:, there needed to be a way to
1:
379:would have the flight number
4556:Telecommunication portal
4337:Telecommunications equipment
1393:"QSL Search machine by OZ7C"
644:and television stations use
524:still in use today, such as
522:three-character call letters
4073:Alexander Stepanovich Popov
1486:Military Call Sign Database
1181:. Museum.tv. Archived from
4633:
3777:Telecommunications history
3082:Imperial, royal, and noble
1341:"QSL INFORMATION by F6CYV"
1209:September 8, 2008, at the
1099:List of aviation mnemonics
922:United States Marine Corps
886:
818:, England to Signal Hill,
742:
712:are given to FM stations.
442:
415:
383:and the callsign would be
308:
243:
4544:
4385:Public Switched Telephone
4197:telecommunication circuit
4158:Fiber-optic communication
3903:Francis Blake (telephone)
3698:Optical telecommunication
3489:
3166:Imperial, royal and noble
1506:October 29, 2020, at the
1245:Gernsback, H (May 1909).
1013:base transceiver stations
926:United States Coast Guard
660:suffix where applicable.
640:), while the majority of
377:Delta Airlines Flight 744
4296:Orbital angular-momentum
3733:Satellite communications
3572:Communications satellite
2007:Maiden and married names
797:Dominion of Newfoundland
745:Amateur radio call signs
622:Dominion of Newfoundland
427:, more in the manner of
323:Currently, all signs in
299:Coast Guard zero two one
199:each one when sending a
4175:Molecular communication
3998:Gardiner Greene Hubbard
3827:Undersea telegraph line
3562:Cable protection system
3494:Category:Lists of names
1491:Military Call Sign List
910:United States Air Force
688:designate AM stations;
333:aircraft's registration
217:stations on board ships
154:âand historically as a
4617:Telecommunications law
4317:Communication protocol
4103:Charles Sumner Tainter
3918:Walter Houser Brattain
3863:Edwin Howard Armstrong
3671:Information revolution
2424:Eritrean and Ethiopian
1114:NATO phonetic alphabet
1059:
1030:In the United States,
995:(or trail name). Some
949:company sergeant major
822:in 1901) and GB90MGY (
761:
465:
264:
225:international standard
4291:Polarization-division
4023:Narinder Singh Kapany
3988:Erna Schneider Hoover
3908:Jagadish Chandra Bose
3888:Alexander Graham Bell
3619:online video platform
3354:GaltonâWatson process
2959:Ancient Tamil country
2381:Australian Aboriginal
1470:Amateur Call Prefixes
1057:
999:protocols also allow
752:
452:
418:Spacecraft call signs
318:flight radio officers
253:
158:âor abbreviated as a
4133:Vladimir K. Zworykin
4093:Almon Brown Strowger
4063:Charles Grafton Page
3718:Prepaid mobile phone
3646:Electrical telegraph
3121:Post-nominal letters
2240:Indigenous Taiwanese
1443:Chapter 4, Section 2
1373:on November 11, 2010
1154:"Radio Call Letters"
912:stations begin with
776:, and the suffix is
636:call signs (such as
580:in Los Angeles; and
504:in Philadelphia and
445:Broadcast call signs
335:number (also called
277:flags of convenience
140:radio communications
54:improve this article
4083:Johann Philipp Reis
3842:Wireless revolution
3804:The Telephone Cases
3661:Hydraulic telegraph
3481:Surnames by country
3106:Pre-nominal letters
2163:Surnames by country
1528:Call Letter Origins
1134:Tactical designator
1064:telephone directory
997:wireless networking
895:tactical call signs
889:Military call signs
883:Military call signs
528:in Salt Lake City;
405:ultralight aircraft
311:Aviation call signs
263:with call sign UKTY
246:Maritime call signs
168:transmitter station
4281:Frequency-division
4258:Telephone exchange
4128:Charles Wheatstone
4058:Jun-ichi Nishizawa
4033:Innocenzo Manzetti
3968:Reginald Fessenden
3703:Optical telegraphy
3536:Telecommunications
3344:Endonym and exonym
3287:Calendar of saints
3270:Related traditions
3044:Manners of address
2406:Sub-Saharan Africa
1827:Nobiliary particle
1060:
941:letter-digit-digit
918:United States Navy
902:United States Army
799:call sign prefix,
762:
628:calls. In Mexico,
466:
429:aviator call signs
265:
256:nuclear icebreaker
4594:
4593:
4332:Store and forward
4327:Data transmission
4241:Network switching
4192:Transmission line
4038:Guglielmo Marconi
4003:Internet pioneers
3868:Mohamed M. Atalla
3837:Whistled language
3502:
3501:
3430:Personal identity
3265:
3264:
2972:
2971:
2913:
2861:
2860:
2822:
2815:
2808:
2766:
2747:
2740:
2733:
2726:
2674:
2645:
2638:
2631:
2624:
2526:
2519:
2214:
2207:
2200:
2193:
1985:By life situation
1938:
1746:
1745:
1234:on March 4, 2016.
1185:on March 14, 2016
1011:systems identify
973:below 10 kHz
877:phonetic alphabet
846:aboard the famed
514:Norfolk, Nebraska
494:Mississippi River
349:phonetic alphabet
193:railroad stations
172:cryptographically
164:unique identifier
146:(also known as a
130:
129:
122:
104:
16:(Redirected from
4624:
4584:
4583:
4574:
4573:
4564:
4563:
4554:
4553:
4552:
4425:Notable networks
4415:Wireless network
4355:Cellular network
4347:Types of network
4322:Computer network
4209:Network topology
4123:Thomas A. Watson
3978:Oliver Heaviside
3963:Philo Farnsworth
3938:Daniel Davis Jr.
3913:Charles Bourseul
3873:John Logie Baird
3582:Data compression
3577:Computer network
3529:
3522:
3515:
3506:
3315:Anthropomorphism
3060:
3008:Buddhist surname
2909:
2818:
2811:
2804:
2764:Hispanic America
2762:
2743:
2736:
2729:
2722:
2670:
2641:
2634:
2629:African-American
2627:
2620:
2538:
2522:
2515:
2486:Ashkenazi Jewish
2291:and Western Asia
2256:and Central Asia
2210:
2203:
2196:
2189:
2168:
2029:Placeholder name
1934:
1878:Double-barrelled
1773:
1766:
1759:
1750:
1557:
1550:
1543:
1534:
1425:
1424:
1422:
1420:
1410:
1404:
1403:
1401:
1399:
1389:
1383:
1382:
1380:
1378:
1369:. Archived from
1363:
1357:
1356:
1354:
1352:
1347:on July 20, 2011
1343:. Archived from
1337:
1331:
1330:
1328:
1326:
1316:
1310:
1309:
1307:
1305:
1295:
1289:
1288:
1286:
1284:
1274:
1268:
1267:
1265:
1263:
1253:
1242:
1236:
1235:
1230:. Archived from
1228:wireless.fcc.gov
1220:
1214:
1201:
1195:
1194:
1192:
1190:
1175:
1169:
1168:
1166:
1164:
1158:
1150:
1015:by implementing
1009:mobile telephony
937:British military
772:, the number is
600:uses the prefix
357:general aviation
339:in the U.S., or
329:general aviation
294:U.S. Coast Guard
213:coastal stations
125:
118:
114:
111:
105:
103:
62:
38:
30:
21:
18:Callsign (radio)
4632:
4631:
4627:
4626:
4625:
4623:
4622:
4621:
4597:
4596:
4595:
4590:
4550:
4548:
4540:
4482:
4419:
4341:
4305:
4262:
4211:
4203:
4144:
4137:
4043:Robert Metcalfe
3898:Tim Berners-Lee
3846:
3666:Information Age
3538:
3533:
3503:
3498:
3485:
3320:Personification
3293:
3261:
3147:
3049:
3045:
3039:
3035:Theophoric name
2968:
2873:
2857:
2771:
2679:
2597:
2559:
2536:
2465:
2453:
2400:
2367:
2290:
2282:
2255:
2249:
2161:
2155:
2050:
2017:Posthumous name
1980:
1861:
1835:
1786:
1777:
1747:
1742:
1614:
1566:
1561:
1523:Industry Canada
1508:Wayback Machine
1451:
1434:
1432:Further reading
1429:
1428:
1418:
1416:
1412:
1411:
1407:
1397:
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1376:
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1297:
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1276:
1275:
1271:
1261:
1259:
1251:
1244:
1243:
1239:
1222:
1221:
1217:
1211:Wayback Machine
1202:
1198:
1188:
1186:
1177:
1176:
1172:
1162:
1160:
1156:
1152:
1151:
1147:
1142:
1080:
1052:
1032:voluntary ships
957:
891:
885:
844:Marconi station
803:to commemorate
747:
741:
536:in Des Moines;
447:
441:
420:
414:
375:. For example,
313:
307:
248:
242:
237:
221:Marconi station
209:radio companies
126:
115:
109:
106:
63:
61:
51:
39:
28:
23:
22:
15:
12:
11:
5:
4630:
4628:
4620:
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4614:
4609:
4599:
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4455:
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4427:
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4412:
4407:
4402:
4397:
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4387:
4382:
4377:
4372:
4367:
4362:
4357:
4351:
4349:
4343:
4342:
4340:
4339:
4334:
4329:
4324:
4319:
4313:
4311:
4307:
4306:
4304:
4303:
4298:
4293:
4288:
4283:
4278:
4276:Space-division
4272:
4270:
4264:
4263:
4261:
4260:
4255:
4254:
4253:
4248:
4238:
4237:
4236:
4226:
4221:
4215:
4213:
4205:
4204:
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4201:
4200:
4199:
4189:
4188:
4187:
4177:
4172:
4167:
4166:
4165:
4155:
4149:
4147:
4139:
4138:
4136:
4135:
4130:
4125:
4120:
4115:
4113:Camille Tissot
4110:
4105:
4100:
4095:
4090:
4088:Claude Shannon
4085:
4080:
4078:Tivadar PuskĂĄs
4075:
4070:
4065:
4060:
4055:
4050:
4048:Antonio Meucci
4045:
4040:
4035:
4030:
4025:
4020:
4018:Charles K. Kao
4015:
4010:
4005:
4000:
3995:
3993:Harold Hopkins
3990:
3985:
3980:
3975:
3970:
3965:
3960:
3955:
3950:
3945:
3940:
3935:
3930:
3925:
3920:
3915:
3910:
3905:
3900:
3895:
3893:Emile Berliner
3890:
3885:
3880:
3875:
3870:
3865:
3860:
3854:
3852:
3848:
3847:
3845:
3844:
3839:
3834:
3832:Videotelephony
3829:
3824:
3823:
3822:
3817:
3807:
3800:
3795:
3789:
3784:
3779:
3774:
3769:
3768:
3767:
3762:
3757:
3747:
3746:
3745:
3735:
3730:
3728:Radiotelephone
3725:
3720:
3715:
3710:
3705:
3700:
3695:
3694:
3693:
3683:
3678:
3673:
3668:
3663:
3658:
3653:
3648:
3643:
3638:
3633:
3632:
3631:
3626:
3621:
3616:
3614:Internet video
3606:
3605:
3604:
3599:
3594:
3589:
3579:
3574:
3569:
3564:
3559:
3554:
3548:
3546:
3540:
3539:
3534:
3532:
3531:
3524:
3517:
3509:
3500:
3499:
3497:
3496:
3490:
3487:
3486:
3484:
3483:
3478:
3477:
3476:
3471:
3466:
3461:
3460:
3459:
3444:
3439:
3438:
3437:
3427:
3420:
3415:
3410:
3403:
3398:
3393:
3388:
3387:
3386:
3381:
3376:
3368:
3367:
3366:
3356:
3351:
3346:
3341:
3336:
3331:
3330:
3329:
3328:
3327:
3312:
3307:
3301:
3299:
3295:
3294:
3292:
3291:
3290:
3289:
3279:
3273:
3271:
3267:
3266:
3263:
3262:
3260:
3259:
3258:
3257:
3252:
3250:Ecclesiastical
3242:
3237:
3232:
3227:
3226:
3225:
3220:
3210:
3205:
3200:
3199:
3198:
3193:
3188:
3183:
3178:
3173:
3163:
3157:
3155:
3149:
3148:
3146:
3145:
3144:
3143:
3142:
3141:
3128:
3118:
3108:
3103:
3102:
3101:
3100:
3099:
3097:Ecclesiastical
3089:
3084:
3079:
3068:
3066:
3057:
3041:
3040:
3038:
3037:
3032:
3027:
3026:
3025:
3015:
3010:
3005:
3004:
3003:
2998:
2993:
2986:Christian name
2982:
2980:
2974:
2973:
2970:
2969:
2967:
2966:
2961:
2956:
2951:
2946:
2941:
2936:
2931:
2926:
2921:
2916:
2915:
2914:
2902:
2897:
2892:
2887:
2881:
2879:
2876:Southeast Asia
2863:
2862:
2859:
2858:
2856:
2855:
2850:
2845:
2840:
2835:
2830:
2825:
2824:
2823:
2816:
2809:
2800:Eastern Slavic
2797:
2792:
2787:
2781:
2779:
2773:
2772:
2770:
2769:
2768:
2767:
2755:
2750:
2749:
2748:
2741:
2734:
2727:
2715:
2710:
2705:
2700:
2695:
2689:
2687:
2681:
2680:
2678:
2677:
2676:
2675:
2663:
2658:
2653:
2648:
2647:
2646:
2639:
2632:
2625:
2613:
2607:
2605:
2599:
2598:
2596:
2595:
2590:
2585:
2580:
2575:
2569:
2567:
2561:
2560:
2558:
2557:
2552:
2546:
2544:
2535:
2534:
2529:
2528:
2527:
2520:
2508:
2503:
2498:
2493:
2488:
2483:
2478:
2472:
2470:
2455:
2454:
2452:
2451:
2446:
2441:
2436:
2431:
2426:
2421:
2416:
2410:
2408:
2402:
2401:
2399:
2398:
2393:
2388:
2383:
2377:
2375:
2369:
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2265:
2259:
2257:
2251:
2250:
2248:
2247:
2242:
2237:
2232:
2227:
2222:
2217:
2216:
2215:
2208:
2201:
2194:
2182:
2176:
2174:
2165:
2157:
2156:
2154:
2153:
2148:
2147:
2146:
2141:
2131:
2124:
2119:
2118:
2117:
2107:
2100:
2099:
2098:
2093:
2088:
2078:
2071:
2065:
2063:
2052:
2051:
2049:
2048:
2043:
2038:
2037:
2036:
2026:
2025:
2024:
2019:
2009:
2004:
1999:
1994:
1988:
1986:
1982:
1981:
1979:
1978:
1973:
1968:
1963:
1962:
1961:
1951:
1946:
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1940:
1939:
1927:
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1833:
1832:
1831:
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1829:
1819:
1805:
1800:
1794:
1792:
1788:
1787:
1780:Personal names
1778:
1776:
1775:
1768:
1761:
1753:
1744:
1743:
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1740:
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1738:
1728:
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1673:United Kingdom
1670:
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1472:
1467:
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1457:
1450:
1449:External links
1447:
1446:
1445:
1433:
1430:
1427:
1426:
1405:
1384:
1358:
1332:
1311:
1290:
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1215:
1196:
1170:
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1136:
1131:
1126:
1124:Procedure word
1121:
1116:
1111:
1106:
1101:
1096:
1091:
1086:
1079:
1076:
1051:
1048:
977:Citizen's Band
956:
953:
887:Main article:
884:
881:
836:distress calls
755:license plates
743:Main article:
740:
737:
564:in Nashville;
556:in Charlotte;
443:Main article:
440:
437:
416:Main article:
413:
410:
393:civil aircraft
309:Main article:
306:
303:
244:Main article:
241:
238:
236:
235:Transportation
233:
205:radiotelegraph
189:telegraph line
128:
127:
42:
40:
33:
26:
24:
14:
13:
10:
9:
6:
4:
3:
2:
4629:
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4612:Broadcast law
4610:
4608:
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4301:Code-division
4299:
4297:
4294:
4292:
4289:
4287:
4286:Time-division
4284:
4282:
4279:
4277:
4274:
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4217:
4216:
4214:
4212:and switching
4210:
4206:
4198:
4195:
4194:
4193:
4190:
4186:
4183:
4182:
4181:
4178:
4176:
4173:
4171:
4168:
4164:
4163:optical fiber
4161:
4160:
4159:
4156:
4154:
4153:Coaxial cable
4151:
4150:
4148:
4146:
4140:
4134:
4131:
4129:
4126:
4124:
4121:
4119:
4116:
4114:
4111:
4109:
4106:
4104:
4101:
4099:
4096:
4094:
4091:
4089:
4086:
4084:
4081:
4079:
4076:
4074:
4071:
4069:
4068:Radia Perlman
4066:
4064:
4061:
4059:
4056:
4054:
4051:
4049:
4046:
4044:
4041:
4039:
4036:
4034:
4031:
4029:
4026:
4024:
4021:
4019:
4016:
4014:
4011:
4009:
4006:
4004:
4001:
3999:
3996:
3994:
3991:
3989:
3986:
3984:
3981:
3979:
3976:
3974:
3971:
3969:
3966:
3964:
3961:
3959:
3958:Lee de Forest
3956:
3954:
3953:Thomas Edison
3951:
3949:
3946:
3944:
3943:Donald Davies
3941:
3939:
3936:
3934:
3931:
3929:
3928:Claude Chappe
3926:
3924:
3921:
3919:
3916:
3914:
3911:
3909:
3906:
3904:
3901:
3899:
3896:
3894:
3891:
3889:
3886:
3884:
3881:
3879:
3876:
3874:
3871:
3869:
3866:
3864:
3861:
3859:
3856:
3855:
3853:
3849:
3843:
3840:
3838:
3835:
3833:
3830:
3828:
3825:
3821:
3818:
3816:
3813:
3812:
3811:
3808:
3806:
3805:
3801:
3799:
3796:
3793:
3790:
3788:
3785:
3783:
3780:
3778:
3775:
3773:
3772:Smoke signals
3770:
3766:
3763:
3761:
3758:
3756:
3753:
3752:
3751:
3750:Semiconductor
3748:
3744:
3741:
3740:
3739:
3736:
3734:
3731:
3729:
3726:
3724:
3721:
3719:
3716:
3714:
3711:
3709:
3706:
3704:
3701:
3699:
3696:
3692:
3689:
3688:
3687:
3684:
3682:
3679:
3677:
3674:
3672:
3669:
3667:
3664:
3662:
3659:
3657:
3654:
3652:
3649:
3647:
3644:
3642:
3639:
3637:
3634:
3630:
3627:
3625:
3622:
3620:
3617:
3615:
3612:
3611:
3610:
3609:Digital media
3607:
3603:
3600:
3598:
3595:
3593:
3590:
3588:
3585:
3584:
3583:
3580:
3578:
3575:
3573:
3570:
3568:
3565:
3563:
3560:
3558:
3555:
3553:
3550:
3549:
3547:
3545:
3541:
3537:
3530:
3525:
3523:
3518:
3516:
3511:
3510:
3507:
3495:
3492:
3491:
3488:
3482:
3479:
3475:
3472:
3470:
3467:
3465:
3462:
3458:
3455:
3454:
3453:
3450:
3449:
3448:
3445:
3443:
3440:
3436:
3433:
3432:
3431:
3428:
3426:
3425:
3421:
3419:
3416:
3414:
3411:
3409:
3408:
3404:
3402:
3399:
3397:
3394:
3392:
3389:
3385:
3382:
3380:
3377:
3375:
3372:
3371:
3369:
3365:
3362:
3361:
3360:
3357:
3355:
3352:
3350:
3347:
3345:
3342:
3340:
3337:
3335:
3332:
3326:
3323:
3322:
3321:
3318:
3317:
3316:
3313:
3311:
3308:
3306:
3303:
3302:
3300:
3296:
3288:
3285:
3284:
3283:
3280:
3278:
3275:
3274:
3272:
3268:
3256:
3253:
3251:
3248:
3247:
3246:
3243:
3241:
3238:
3236:
3233:
3231:
3228:
3224:
3221:
3219:
3216:
3215:
3214:
3211:
3209:
3206:
3204:
3201:
3197:
3194:
3192:
3189:
3187:
3184:
3182:
3179:
3177:
3174:
3172:
3169:
3168:
3167:
3164:
3162:
3159:
3158:
3156:
3154:
3150:
3140:
3136:
3132:
3129:
3127:
3124:
3123:
3122:
3119:
3117:
3114:
3113:
3112:
3109:
3107:
3104:
3098:
3095:
3094:
3093:
3090:
3088:
3085:
3083:
3080:
3078:
3075:
3074:
3073:
3070:
3069:
3067:
3065:
3061:
3058:
3056:
3052:
3048:
3042:
3036:
3033:
3031:
3030:Mandaean name
3028:
3024:
3021:
3020:
3019:
3016:
3014:
3011:
3009:
3006:
3002:
2999:
2997:
2994:
2992:
2991:Biblical name
2989:
2988:
2987:
2984:
2983:
2981:
2979:
2975:
2965:
2962:
2960:
2957:
2955:
2952:
2950:
2947:
2945:
2942:
2940:
2937:
2935:
2932:
2930:
2927:
2925:
2922:
2920:
2917:
2912:
2908:
2907:
2906:
2903:
2901:
2898:
2896:
2893:
2891:
2888:
2886:
2883:
2882:
2880:
2877:
2872:
2868:
2864:
2854:
2851:
2849:
2846:
2844:
2841:
2839:
2836:
2834:
2831:
2829:
2826:
2821:
2817:
2814:
2810:
2807:
2803:
2802:
2801:
2798:
2796:
2793:
2791:
2788:
2786:
2783:
2782:
2780:
2778:
2774:
2765:
2761:
2760:
2759:
2756:
2754:
2751:
2746:
2742:
2739:
2735:
2732:
2728:
2725:
2721:
2720:
2719:
2716:
2714:
2711:
2709:
2706:
2704:
2701:
2699:
2696:
2694:
2691:
2690:
2688:
2686:
2682:
2673:
2669:
2668:
2667:
2664:
2662:
2659:
2657:
2654:
2652:
2649:
2644:
2640:
2637:
2633:
2630:
2626:
2623:
2619:
2618:
2617:
2614:
2612:
2609:
2608:
2606:
2604:
2600:
2594:
2591:
2589:
2586:
2584:
2581:
2579:
2576:
2574:
2571:
2570:
2568:
2566:
2562:
2556:
2553:
2551:
2548:
2547:
2545:
2543:
2539:
2533:
2530:
2525:
2521:
2518:
2517:Ancient Greek
2514:
2513:
2512:
2509:
2507:
2504:
2502:
2499:
2497:
2494:
2492:
2489:
2487:
2484:
2482:
2479:
2477:
2474:
2473:
2471:
2469:
2464:
2463:North America
2460:
2456:
2450:
2447:
2445:
2442:
2440:
2437:
2435:
2432:
2430:
2427:
2425:
2422:
2420:
2417:
2415:
2412:
2411:
2409:
2407:
2403:
2397:
2394:
2392:
2389:
2387:
2384:
2382:
2379:
2378:
2376:
2374:
2370:
2364:
2361:
2359:
2356:
2354:
2351:
2349:
2346:
2344:
2341:
2339:
2336:
2334:
2331:
2329:
2326:
2324:
2321:
2319:
2316:
2314:
2311:
2309:
2306:
2304:
2301:
2299:
2296:
2295:
2293:
2289:
2285:
2279:
2276:
2274:
2271:
2269:
2266:
2264:
2261:
2260:
2258:
2254:Northern Asia
2252:
2246:
2243:
2241:
2238:
2236:
2233:
2231:
2228:
2226:
2223:
2221:
2218:
2213:
2209:
2206:
2202:
2199:
2195:
2192:
2188:
2187:
2186:
2183:
2181:
2178:
2177:
2175:
2173:
2169:
2166:
2164:
2158:
2152:
2149:
2145:
2142:
2140:
2137:
2136:
2135:
2132:
2130:
2129:
2125:
2123:
2120:
2116:
2113:
2112:
2111:
2108:
2106:
2105:
2104:Nom de guerre
2101:
2097:
2094:
2092:
2089:
2087:
2084:
2083:
2082:
2079:
2077:
2076:
2072:
2070:
2067:
2066:
2064:
2061:
2057:
2053:
2047:
2044:
2042:
2039:
2035:
2032:
2031:
2030:
2027:
2023:
2020:
2018:
2015:
2014:
2013:
2010:
2008:
2005:
2003:
2000:
1998:
1995:
1993:
1990:
1989:
1987:
1983:
1977:
1974:
1972:
1969:
1967:
1964:
1960:
1957:
1956:
1955:
1952:
1950:
1947:
1945:
1942:
1937:
1933:
1932:
1931:
1928:
1926:
1923:
1921:
1918:
1916:
1913:
1911:
1908:
1906:
1903:
1899:
1896:
1894:
1891:
1889:
1886:
1885:
1884:
1881:
1879:
1876:
1874:
1871:
1870:
1868:
1864:
1858:
1855:
1853:
1850:
1848:
1845:
1844:
1842:
1838:
1828:
1825:
1824:
1823:
1820:
1818:
1814:
1811:
1810:
1809:
1806:
1804:
1801:
1799:
1796:
1795:
1793:
1791:Personal name
1789:
1785:
1781:
1774:
1769:
1767:
1762:
1760:
1755:
1754:
1751:
1737:
1734:
1733:
1732:
1731:South America
1729:
1725:
1722:
1718:
1715:
1714:
1713:
1710:
1709:
1708:
1705:
1701:
1700:United States
1698:
1696:
1693:
1691:
1688:
1686:
1683:
1682:
1681:
1680:North America
1678:
1674:
1671:
1669:
1666:
1665:
1664:
1661:
1657:
1654:
1652:
1649:
1647:
1644:
1642:
1639:
1638:
1637:
1634:
1632:
1629:
1627:
1624:
1623:
1621:
1617:
1611:
1608:
1606:
1603:
1601:
1598:
1596:
1595:Amateur radio
1593:
1591:
1588:
1584:
1581:
1580:
1579:
1576:
1575:
1573:
1569:
1565:
1558:
1553:
1551:
1546:
1544:
1539:
1538:
1535:
1529:
1526:
1524:
1520:
1517:
1514:
1513:Radio-Locator
1511:
1509:
1505:
1502:
1499:
1497:
1494:
1492:
1489:
1487:
1484:
1481:
1478:
1476:
1473:
1471:
1468:
1466:
1463:
1461:
1458:
1456:
1453:
1452:
1448:
1444:
1440:
1436:
1435:
1431:
1415:
1409:
1406:
1394:
1388:
1385:
1372:
1368:
1362:
1359:
1346:
1342:
1336:
1333:
1321:
1315:
1312:
1300:
1294:
1291:
1279:
1273:
1270:
1257:
1250:
1249:
1241:
1238:
1233:
1229:
1225:
1219:
1216:
1212:
1208:
1205:
1200:
1197:
1184:
1180:
1174:
1171:
1155:
1149:
1146:
1139:
1135:
1132:
1130:
1127:
1125:
1122:
1120:
1117:
1115:
1112:
1110:
1107:
1105:
1102:
1100:
1097:
1095:
1092:
1090:
1087:
1085:
1082:
1081:
1077:
1075:
1072:
1067:
1065:
1056:
1049:
1047:
1045:
1041:
1037:
1033:
1028:
1024:
1022:
1018:
1014:
1010:
1006:
1005:MAC addresses
1002:
998:
994:
990:
986:
982:
978:
974:
970:
966:
962:
954:
952:
950:
946:
942:
938:
933:
931:
927:
923:
919:
915:
911:
907:
903:
898:
896:
890:
882:
880:
878:
873:
871:
867:
863:
858:
856:
855:
850:luxury liner
849:
845:
841:
837:
833:
829:
825:
821:
817:
813:
810:
806:
802:
798:
794:
790:
785:
781:
779:
775:
771:
766:
765:Amateur radio
760:
756:
751:
746:
739:Amateur radio
738:
736:
734:
730:
726:
720:
718:
713:
711:
707:
703:
699:
695:
691:
687:
683:
679:
675:
671:
667:
661:
659:
655:
651:
647:
643:
639:
635:
632:stations use
631:
627:
623:
619:
615:
611:
607:
603:
599:
594:
591:
587:
583:
579:
575:
571:
567:
563:
559:
555:
551:
547:
543:
539:
535:
531:
527:
523:
519:
515:
511:
507:
503:
499:
495:
491:
485:
482:
478:
475:
471:
464:
460:
456:
451:
446:
438:
436:
432:
430:
426:
419:
411:
409:
406:
402:
398:
394:
388:
386:
382:
378:
374:
373:Flight number
370:
366:
362:
358:
355:conducting a
354:
350:
346:
342:
338:
334:
330:
326:
321:
319:
312:
304:
302:
300:
295:
290:
285:
283:
278:
274:
270:
262:
261:
257:
252:
247:
239:
234:
232:
230:
226:
222:
218:
214:
210:
206:
202:
198:
194:
190:
186:
183:
178:
176:
173:
169:
165:
161:
157:
153:
149:
145:
141:
137:
132:
124:
121:
113:
102:
99:
95:
92:
88:
85:
81:
78:
74:
71: â
70:
66:
65:Find sources:
59:
55:
49:
48:
43:This article
41:
37:
32:
31:
19:
4268:Multiplexing
4143:Transmission
4108:Nikola Tesla
4098:Henry Sutton
4053:Samuel Morse
3983:Robert Hooke
3948:Amos Dolbear
3883:John Bardeen
3802:
3782:Telautograph
3686:Mobile phone
3641:Edholm's law
3624:social media
3557:Broadcasting
3469:Signum manus
3457:Royal cypher
3422:
3407:Nomen nescio
3405:
3401:Nomenclature
3396:Naming taboo
3333:
3208:Professional
3051:of authority
3001:Saint's name
2666:Scandinavian
2288:Muslim world
2126:
2102:
2073:
1925:Occupational
1784:anthroponymy
1563:
1438:
1419:November 24,
1417:. Retrieved
1408:
1398:November 24,
1396:. Retrieved
1387:
1377:November 24,
1375:. Retrieved
1371:the original
1361:
1351:November 24,
1349:. Retrieved
1345:the original
1335:
1325:November 24,
1323:. Retrieved
1314:
1304:November 24,
1302:. Retrieved
1293:
1283:November 24,
1281:. Retrieved
1272:
1260:. Retrieved
1247:
1240:
1232:the original
1227:
1218:
1199:
1187:. Retrieved
1183:the original
1173:
1161:. Retrieved
1148:
1084:Brevity code
1068:
1061:
1031:
1029:
1025:
958:
940:
934:
929:
913:
905:
899:
892:
874:
869:
862:King Hussein
859:
853:
839:
831:
827:
823:
811:
800:
792:
788:
786:
782:
777:
773:
769:
763:
728:
724:
721:
714:
709:
705:
701:
697:
692:is used for
689:
685:
681:
677:
673:
669:
665:
662:
657:
653:
649:
645:
633:
625:
613:
609:
605:
601:
595:
568:in Buffalo;
544:in Detroit;
497:
489:
486:
467:
439:Broadcasting
433:
421:
389:
384:
380:
376:
368:
364:
360:
352:
340:
336:
322:
314:
298:
286:
282:marine radio
275:, which are
266:
258:
191:linking all
179:
159:
155:
152:call letters
151:
147:
143:
136:broadcasting
133:
131:
116:
107:
97:
90:
83:
76:
64:
52:Please help
47:verification
44:
4468:NPL network
4180:Radio waves
4118:Alfred Vail
4028:Hedy Lamarr
4013:Dawon Kahng
3973:Elisha Gray
3933:Yogen Dalal
3858:Nasir Ahmed
3792:Teleprinter
3656:Heliographs
3442:Proper name
3364:Name change
3218:Educational
3196:Substantive
3135:decorations
3018:Jewish name
3013:Dharma name
2978:By religion
2643:Hongkongese
2468:Australasia
2308:Azerbaijani
2041:Regnal name
2022:Temple name
1852:Middle name
1840:By sequence
1817:Matrilineal
1813:Patrilineal
1724:New Zealand
1656:Middle East
1480:FCCData.org
560:in Boston;
532:in Denver;
412:Spaceflight
341:tail number
207:operation;
156:call signal
69:"Call sign"
4607:Call signs
4601:Categories
4514:Antarctica
4473:Toasternet
4395:Television
3878:Paul Baran
3810:Television
3794:(teletype)
3787:Telegraphy
3765:transistor
3743:Phryctoria
3713:Photophone
3691:Smartphone
3681:Mass media
3435:Identifier
3418:Onomastics
3359:Legal name
3339:Deadnaming
3235:Diplomatic
3191:Subsidiary
3186:Hereditary
3077:Diplomatic
2996:Papal name
2905:Indonesian
2871:South Asia
2867:Indosphere
2833:Macedonian
2806:Belarusian
2713:Portuguese
2555:Lithuanian
2449:Zimbabwean
2245:Vietnamese
2205:Generation
2172:East Asian
2160:By culture
2134:Stage name
2091:Hypocorism
2056:Pseudonyms
2046:Slave name
1997:Birth name
1949:Teknonymic
1930:Patronymic
1910:Matronymic
1873:Diminutive
1847:First name
1803:Given name
1798:Birth name
1717:television
1631:Antarctica
1610:Spacecraft
1564:Call signs
1262:August 14,
1140:References
1109:ITU prefix
1036:VHF radios
848:White Star
820:St. John's
814:sent from
809:Morse code
759:California
733:trade mark
696:stations;
618:St. John's
425:cosmonauts
401:hovercraft
229:ITU prefix
110:March 2013
80:newspapers
4498:Americas
4487:Locations
4458:Internet2
4219:Bandwidth
3923:Vint Cerf
3820:streaming
3798:Telephone
3738:Semaphore
3629:streaming
3447:Signature
3334:Call sign
3310:Anonymity
3245:Religious
3171:Chivalric
3092:Religious
3087:Judiciary
3072:Honorific
3055:of honour
2954:Sinhalese
2944:Pakistani
2929:Malaysian
2924:Cambodian
2828:Kashubian
2820:Ukrainian
2785:Bulgarian
2724:Praenomen
2661:Icelandic
2532:Hungarian
2333:Pakistani
2268:Mongolian
2122:Ring name
2115:Heteronym
2081:Nicknames
2002:Code name
1954:Toponymic
1944:Sobriquet
1920:Mononymic
1915:Metonymic
1857:Last name
1736:Argentina
1712:Australia
1590:Broadcast
1414:"QSLInfo"
1278:"QRZ.COM"
1129:Pseudonym
1050:Callbooks
985:ISM bands
945:fire team
860:The late
694:shortwave
550:Cleveland
484:country.
385:Delta 744
185:telegraph
148:call name
144:call sign
4566:Category
4453:Internet
4443:CYCLADES
4360:Ethernet
4310:Concepts
4234:terminal
4185:wireless
4008:Bob Kahn
3851:Pioneers
3676:Internet
3567:Cable TV
3464:Khelrtva
3452:Monogram
3413:Misnomer
3391:Namesake
3325:National
3282:Name day
3240:Judicial
3230:Business
3223:Honorary
3213:Academic
3203:Military
3176:Courtesy
3161:Academic
3126:Academic
3116:Emeritus
2919:Javanese
2900:Filipino
2885:Balinese
2853:Suffixes
2790:Croatian
2753:Romanian
2738:Cognomen
2636:Canadian
2622:American
2603:Germanic
2588:Scottish
2506:Georgian
2496:Estonian
2481:Armenian
2476:Albanian
2434:Ghanaian
2391:Hawaiian
2328:Mandaean
2235:Okinawan
2220:Japanese
2191:Courtesy
2151:Username
2144:Mononyms
2110:Pen name
2096:Monarchs
2069:Art name
2012:Necronym
1992:Aptronym
1905:Eponymic
1866:By trait
1685:Barbados
1619:By place
1605:Military
1600:Maritime
1583:Airlines
1578:Aircraft
1504:Archived
1256:New York
1207:Archived
1189:March 5,
1078:See also
1071:QSL card
1023:(IMSI).
816:Cornwall
642:FM radio
630:AM radio
612:through
463:Maryland
455:QSL card
365:November
337:N-number
325:aviation
305:Aviation
254:Russian
240:Maritime
201:telegram
182:railroad
4586:Commons
4576:Outline
4529:Oceania
4448:FidoNet
4433:ARPANET
4246:circuit
3815:digital
3544:History
3384:Surname
3305:Acronym
3298:Related
3277:Baptism
2911:Chinese
2895:Burmese
2890:Bengali
2843:Serbian
2813:Russian
2758:Spanish
2745:Agnomen
2708:Occitan
2703:Italian
2693:Catalan
2685:Romance
2672:Swedish
2616:English
2573:Cornish
2550:Latvian
2524:Cypriot
2501:Finnish
2414:Ashanti
2373:Oceania
2363:Turkish
2343:Persian
2338:Pashtun
2313:Bengali
2278:Tibetan
2185:Chinese
2128:Shikona
2034:Notname
1966:Patrial
1959:Surname
1936:Surname
1883:Epithet
1822:Affixes
1808:Surname
1707:Oceania
1571:By type
1204:GB90MGY
1163:May 19,
1119:Pan-pan
1017:cell ID
981:Part 15
935:In the
854:Titanic
805:Marconi
620:by the
453:A 1940
347:(ICAO)
269:Liberia
260:Arktika
197:address
175:encoded
162:) is a
94:scholar
4524:Europe
4494:Africa
4478:Usenet
4438:BITNET
4375:Mobile
4251:packet
3760:MOSFET
3755:device
3552:Beacon
3474:Tughra
3379:Middle
3349:Family
3153:Titles
3139:medals
3137:, and
3131:Orders
3111:Suffix
3064:Styles
3023:Hebrew
2949:Sindhi
2934:Indian
2848:Slovak
2838:Polish
2777:Slavic
2698:French
2656:Gothic
2651:German
2565:Celtic
2542:Baltic
2491:Basque
2459:Europe
2444:Yoruba
2386:Fijian
2353:Somali
2348:Sindhi
2323:Coptic
2318:Berber
2303:Arabic
2298:Afghan
2263:Kalmyk
2230:Manchu
2225:Korean
2212:Titles
1976:Virtue
1971:Unisex
1893:Common
1888:Animal
1695:Mexico
1690:Canada
1668:Russia
1663:Europe
1626:Africa
1441:2004.
1042:or an
993:handle
979:(CB),
924:, and
866:Jordan
842:, the
708:, and
684:, and
638:XEW-AM
590:WLS-TV
546:WJW-TV
516:, and
353:N978CP
273:Panama
166:for a
96:
89:
82:
75:
67:
4507:South
4502:North
4463:JANET
4400:Telex
4390:Radio
4229:Nodes
4224:Links
4145:media
3723:Radio
3708:Pager
3636:Drums
3602:video
3597:image
3587:audio
3424:-onym
3374:Given
3370:List
3255:Papal
3181:False
2795:Czech
2731:Nomen
2718:Roman
2611:Dutch
2593:Welsh
2578:Irish
2511:Greek
2396:MÄori
2358:Tatar
2273:Sakha
2180:Amami
1898:Plant
1651:Korea
1646:Japan
1641:India
1252:(PDF)
1157:(PDF)
1044:EPIRB
1040:radar
1001:SSIDs
989:Wi-Fi
969:Omega
965:Alpha
961:Decca
838:from
795:as a
656:, or
470:brand
381:DL744
227:; an
101:JSTOR
87:books
4519:Asia
4405:UUCP
4365:ISDN
3047:List
2964:Thai
2874:and
2583:Manx
2466:and
2439:Igbo
2139:List
2086:list
2075:BugĹ
2060:list
1782:and
1636:Asia
1421:2010
1400:2010
1379:2010
1353:2010
1327:2010
1306:2010
1285:2010
1264:2018
1191:2016
1165:2019
900:The
852:RMS
830:and
789:VO1S
668:and
658:-TDT
608:and
588:and
576:and
540:and
518:WOAI
510:WJAG
506:KDKA
496:and
481:Rock
479:", "
474:Cool
457:for
399:and
215:and
160:call
142:, a
138:and
73:news
4410:WAN
4380:NGN
4370:LAN
3651:Fax
3592:DCT
2939:Lao
2429:Ewe
2198:Art
1003:or
983:or
932:.
870:JY1
864:of
857:).
840:MGY
832:MGY
793:VO1
778:DBA
710:ZYU
706:ZYM
702:ZYD
698:ZYC
690:ZYG
686:ZYK
682:ZYL
678:ZYJ
674:ZYI
670:ZYB
666:ZYA
654:-TV
650:-FM
586:WLS
582:WGN
578:KHJ
574:KNX
570:KFI
566:WGR
562:WSM
558:WBZ
554:WBT
548:in
542:WJR
538:WWJ
534:WHO
530:KOA
526:KSL
512:in
502:KYW
459:WWV
289:FCC
271:or
150:or
134:In
56:by
4603::
3133:,
2461:,
1254:.
1226:.
1038:,
967:,
963:,
951:.
920:,
828:90
824:GB
770:J2
704:,
700:,
680:,
676:,
652:,
646:XH
634:XE
626:VO
614:CK
610:CH
606:CF
602:CB
584:,
572:;
552:;
477:FM
387:.
301:.
4537:)
4533:(
3528:e
3521:t
3514:v
3053:/
2878:)
2869:(
2062:)
2058:(
1815:/
1772:e
1765:t
1758:v
1556:e
1549:t
1542:v
1521:â
1423:.
1402:.
1381:.
1355:.
1329:.
1308:.
1287:.
1266:.
1193:.
1167:.
930:N
914:A
906:W
812:S
801:S
791:(
774:9
729:C
725:E
498:W
490:K
123:)
117:(
112:)
108:(
98:¡
91:¡
84:¡
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