2757:
731:
4930:
627:
4940:
4919:
4950:
861:
which is not sensitive to the relative orientation of the transmitting and receiving antennas. For television broadcasting specialized vertical radiators that are mostly modifications of the slot antenna or reflective array antenna are used: the slotted cylinder, zig-zag, and panel antennas.
746:
1267:—frequencies with a higher unlicensed power permitted for use originally by Industrial, Scientific, Medical apparatus—are now some of the most crowded in the spectrum because they are open to everyone. The 2.45 GHz frequency is the standard for use by
700:
As the visual horizon sets the maximum range of UHF transmission to between 30 and 40 miles (48 to 64 km) or less, depending on local terrain, the same frequency channels can be reused by other users in neighboring geographic areas
1939:
1392:
was completed on June 12, 2009 (formerly high-band UHF TV channels 52 to 69) and recently modified in 2021 for Next
Generation 5G UHF transmission bandwidth for 'over the air' channels 2 thru 69 (virtual 1 thru
765:
is between 2.5 and 25 cm long. UHF wavelengths are short enough that efficient transmitting antennas are small enough to mount on handheld and mobile devices, so these frequencies are used for two-way
1162:
791–862 MHz, i.e. channels 61 to 69 inclusive were previously used for licensed and shared wireless microphones (channel 69 only), has since been allocated to 4G cellular communications.
1297:
service, which was later sold to AT&T, and discontinued in 2011. Some US broadcasters had been offered incentives to vacate this channel early, permitting its immediate mobile use. The
1950:
3215:
1289:, the spectrum from 698 MHz to 806 MHz (UHF channels 52 to 69) was removed from TV broadcasting, making it available for other uses. Channel 55, for instance, was sold to
1142:
693:, the strength of UHF signals over long distances, and the attenuation increases with frequency. UHF TV signals are generally more degraded by moisture than lower bands, such as
1245:. However, because of their more limited range, and because few sets could receive them until older sets were replaced, UHF channels were less desirable to broadcasters than
2702:
1230:
1621:
988:
608:
1259:
There is a considerable amount of lawful unlicensed activity (cordless phones, wireless networking) clustered around 900 MHz and 2.4 GHz, regulated under
1234:
892:
Since at UHF frequencies transmitting antennas are small enough to install on portable devices, the UHF spectrum is used worldwide for land mobile radio systems,
2216:
508:
4986:
4902:
4874:
4869:
3894:
3208:
1667:
1385:
1367:
1302:
1202:
5288:
1152:
digital TV. Channels 55 to 56 were previously used by temporary muxes COM7 and COM8, channel 38 was used for radio astronomy but has been cleared to allow
1681:
2020–2110 MHz: Cable
Antenna Relay service, Local Television Transmission service, TV Broadcast Auxiliary service, Earth Exploration Satellite service
1238:
568:; they are blocked by hills and large buildings although the transmission through building walls is strong enough for indoor reception. They are used for
5038:
2387:
2362:
1628:
in
Wallops Island, Virginia; Greenbelt, Maryland and Fairbanks, Alaska. Nationwide broadband service license in this range is held by a subsidiary of
757:
is related to the length of the radio waves used. Due to the short wavelengths, UHF antennas are conveniently stubby and short; at UHF frequencies a
673:. UHF radio waves are blocked by hills and cannot travel beyond the horizon, but can penetrate foliage and buildings for indoor reception. Since the
3642:
2451:
3201:
5327:
4896:
2695:
2351:
2125:
5298:
4891:
4881:
4861:
4663:
3672:
2064:
2154:
2088:
2042:
1096:
1913:
873:
fulfilled the demand for additional over-the-air television channels in urban areas. Today, much of the bandwidth has been reallocated to
1660:
1780–1850 MHz: exclusive federal use (Air Force satellite communications, Army's cellular-like communication system, other agencies)
5523:
5347:
4886:
4732:
2666:
1278:
The spectrum from 806 MHz to 890 MHz (UHF channels 70 to 83) was taken away from TV broadcast services in 1983, primarily for
1253:
1153:
822:
4658:
3227:
1886:
4752:
2688:
1547:
1298:
936:
501:
1159:
694–790 MHz: i.e. Channels 49 to 60 have been cleared, to allow these channels to be allocated for 5G cellular communication.
4979:
4537:
4085:
3887:
1629:
4648:
3557:
1828:
1675:
1930–2000 MHz: PCS base stations—order is A, D, B, E, F, C, G, H blocks. A, B, C = 15 MHz; D, E, F, G, H = 5 MHz
1587:
1756:
2390–2395 MHz: Aircraft landing and safety systems (secondary deployment in a dozen of airports), amateur radio otherwise
1663:
1850–1920 MHz: PCS mobile phone—order is A, D, B, E, F, C, G, H blocks. A, B, C = 15 MHz; D, E, F, G, H = 5 MHz
5563:
5460:
4643:
4194:
3721:
2269:
1896:
1833:
1568:
1443:
5308:
4668:
3692:
3521:
4953:
2324:"AT&T Mobility Petition for Limited Waiver of Interim Performance Requirement for 2.3 GHz WCS C and D Block Licenses"
2099:
5235:
4943:
4704:
4601:
4144:
3911:
3764:
3465:
3235:
2444:
1838:
1335:
1279:
901:
494:
5533:
4972:
4933:
4440:
3880:
3662:
2803:
2642:
2183:
1617:
1668.4–1670 MHz: Radio astronomy observations. Weather balloons may utilize the spectrum after an advance notice.
870:
725:
569:
1415:
862–869 MHz: ESMR band for wideband mobile services (base station) (formerly public safety and commercial 2-way)
1399:
817–824 MHz: ESMR band for wideband mobile services (mobile phone) (formerly public safety and commercial 2-way)
1241:. Since 1962, UHF channel tuners (at the time, channels 14 to 83) have been required in television receivers by the
5506:
5475:
5220:
5130:
4792:
4714:
4653:
4360:
3562:
3500:
3288:
3278:
3273:
3268:
3258:
3253:
3248:
3243:
2798:
2018:
1824:
1685:
1643:
1521:
1135:
457–464 MHz: Scanning telemetry and telecontrol, assigned mostly to the water, gas, and electricity industries
1012:
4564:
4525:
4370:
4270:
4199:
4132:
3959:
3475:
1787:
1554:
1116:
878:
654:
565:
927:
Major telecommunications providers have deployed voice and data cellular networks in VHF/UHF range. This allows
4923:
4165:
4100:
4053:
3939:
3098:
2711:
2627:
1242:
838:
834:
767:
677:
of UHF waves are comparable to the size of buildings, trees, vehicles and other common objects, reflection and
438:
261:
2184:"TerreStar Corporation Request for Temporary Waiver of Substantial Service Requirements for 1.4 GHz Licenses"
615:
as frequencies between 300 MHz and 1 GHz. Two other IEEE radar bands overlap the ITU UHF band: the
5558:
5485:
5384:
5337:
5245:
4762:
4747:
4591:
4542:
4465:
4365:
4043:
3929:
3924:
3794:
3667:
3148:
2477:
2437:
2000:
1710:
1317:
1070:
807:
762:
207:
896:
used for voice communication for commercial, industrial, public safety, and military purposes. Examples of
5379:
5293:
5135:
4684:
4470:
4285:
4230:
4225:
4038:
4003:
3716:
3682:
3677:
3637:
3490:
3430:
1422:
1406:
1188:
870–960 MHz: Cellular communications (GSM900 - Vodafone and O2 only) including GSM-R and future TETRA
1090:
1046:
1005:
897:
581:
5480:
5303:
5283:
4586:
4390:
4355:
4275:
4255:
4177:
4065:
3986:
3851:
3588:
1514:
1498:
1402:
824–849 MHz: Cellular A & B franchises, terminal (mobile phone) (formerly TV channels 73 to 77)
858:
686:
1520:
1435–1525 MHz: Military use mostly for aeronautical mobile telemetry (therefore not available for
635:
5048:
5033:
5028:
4500:
4460:
4430:
4187:
4122:
4013:
3830:
3815:
3552:
3460:
3103:
2612:
2323:
1975:
1339:
1260:
921:
830:
799:
713:
553:
256:
28:
1453:, alarm monitoring, meter reading systems and other narrowband services for a company's internal use
5215:
5086:
4510:
4450:
4209:
4171:
4028:
3969:
3954:
3769:
3731:
3632:
3592:
3143:
3138:
3113:
3093:
2844:
2582:
2507:
2492:
1171:
818:
694:
561:
377:
266:
244:
217:
212:
5352:
4737:
4694:
4625:
4495:
4425:
4400:
4335:
4182:
3903:
3657:
3607:
3133:
2981:
2954:
2864:
2849:
2522:
1779:
1760:
1716:
1670:
1485:
1439:
1389:
1325:
1286:
1217:
1205:
1192:
1178:
1123:
1102:
1066:
1039:
886:
803:
631:
222:
1376:
652–663 MHz: Wireless microphones (higher priority) and unlicensed devices (lower priority)
709:
are used to retransmit UHF signals when a distance greater than the line of sight is required.
5568:
5465:
5342:
4777:
4699:
4613:
4596:
4559:
4445:
4405:
4235:
4204:
4070:
3964:
3784:
3741:
3602:
3410:
3406:
3224:
2989:
2985:
2966:
2962:
2958:
1892:
1349:
2-way radio in 12 major metropolitan areas scheduled to relocate to 700 MHz band by 2023)
854:
846:
745:
678:
648:
1418:
869–894 MHz: Cellular A & B franchises, base station (formerly TV channels 80 to 83)
5501:
5445:
5259:
5070:
4995:
4782:
4742:
4722:
4689:
4618:
4576:
4490:
4345:
4330:
4305:
4280:
4240:
4090:
3949:
3944:
3934:
3711:
3652:
3495:
3445:
3123:
2894:
2869:
2737:
2552:
1655:
1755–1780 MHz: AWS-3 blocks G, H, I, J (various federal agencies transitioning by 2025)
1494:
1350–1390 MHz: Military air traffic control and mobile telemetry systems at test ranges
932:
882:
826:
758:
730:
277:
234:
2756:
1022:
Many other frequency assignments for Canada and Mexico are similar to their US counterparts
5470:
5440:
5076:
4410:
4265:
4033:
3996:
3810:
3702:
3627:
3583:
3450:
3172:
3085:
2927:
2859:
1791:
1733:
1633:
1598:
1532:
1360:
954:
UHF radars are said to be effective at tracking stealth fighters, if not stealth bombers.
850:
779:
754:
702:
601:
533:
196:
4008:
2244:
4964:
3193:
5080:
4608:
4480:
4455:
4415:
4385:
4260:
4095:
3981:
3789:
3617:
3531:
3420:
3118:
2902:
2567:
2460:
1795:
1465:
932–935 MHz: Fixed microwave services: distribution of video, audio and other data
1268:
1182:
957:
Wi-Fi operates between 2,412 and 2,484 MHz. LTE also operates on UHF frequencies.
811:
795:
783:
658:
612:
597:
372:
362:
239:
189:
5552:
5455:
5180:
5060:
4999:
4757:
4530:
4520:
4435:
4325:
4320:
4310:
4295:
4117:
3976:
3505:
3455:
3338:
3334:
3324:
3320:
3316:
3312:
3308:
3304:
3300:
3296:
3292:
3282:
3262:
3128:
3065:
3046:
2950:
2884:
2879:
2874:
2537:
2294:
1625:
1321:
1149:
1062:
893:
775:
771:
738:
712:
Occasionally when conditions are right, UHF radio waves can travel long distances by
593:
415:
397:
352:
347:
342:
337:
332:
327:
322:
317:
312:
307:
302:
297:
292:
287:
229:
174:
108:
104:
100:
96:
1614:
1660.5–1668.4 MHz: Radio astronomy observations. Transmitting is not permitted.
1412:
851–861 MHz: Public safety and commercial 2-way (formerly TV channels 77 to 80)
1396:
806–816 MHz: Public safety and commercial 2-way (formerly TV channels 70 to 72)
17:
5527:
5002:
4635:
4475:
4420:
4350:
4315:
4250:
4149:
4139:
3991:
3856:
3647:
3536:
3470:
3440:
3365:
3004:
2670:
928:
842:
806:(PIFA) used in cellphones. Higher gain omnidirectional UHF antennas can be made of
791:
741:
operating on 462 and 467 MHz in the UHF band, showing the short antennas used
626:
5450:
5275:
5066:
4835:
4485:
4395:
4380:
4340:
4300:
4159:
3825:
3820:
3759:
3485:
3425:
3415:
3177:
2854:
2836:
2732:
2415:
1771:
1346:
1310:
874:
690:
670:
573:
5332:
5318:
5020:
4840:
4547:
4245:
4154:
4110:
4080:
4058:
4048:
4023:
3754:
3687:
3622:
3435:
3158:
2826:
2821:
2775:
2752:
1805:
1744:
1726:
1580:
1356:
1083:
787:
674:
662:
1859:"IEEE 521-2002 - IEEE Standard Letter Designations for Radar-Frequency Bands"
1814:
2690–2700 MHz: Receive-only range for radio astronomy and space research
5424:
5419:
5414:
5404:
5395:
5254:
4825:
4290:
4105:
3861:
3846:
3779:
3774:
3749:
3597:
3578:
3167:
3014:
2790:
2768:
2747:
2722:
1783:
1737:
1272:
589:
557:
549:
541:
537:
80:
2680:
1858:
1345:
470–512 MHz: Low-band TV channels 14 to 20 (shared with public safety
1808:
downlink and
Terrestrial Low Power Service suitable for TD-LTE small cells
1706:
satellite tracking, telemetry and control (space-to-Earth, space-to-space)
1507:
1400–1427 MHz: Earth exploration, radio astronomy, and space research
912:. Some wireless computer networks use UHF frequencies. The widely adopted
5145:
5098:
5056:
4820:
4810:
4727:
4552:
4375:
3612:
3480:
3330:
3182:
2999:
2977:
2972:
2942:
2742:
2422:
2019:"Decision to make the 700 MHz band available for mobile data - statement"
1767:
1594:
1528:
1435:
1329:
1294:
1290:
1264:
1033:
940:
706:
466:
1750:
2350–2360 MHz: WCS mobile broadband service downlink blocks A and B
790:. Omnidirectional UHF antennas used on mobile devices are usually short
5185:
5140:
5094:
4815:
4800:
3385:
3051:
3037:
2429:
1561:
1471:
940–941 MHz: Narrowband PCS: commercial narrowband mobile services
1459:
930–931 MHz: Narrowband PCS: commercial narrowband mobile services
1431:
901–902 MHz: Narrowband PCS: commercial narrowband mobile services
1252:
A complete list of US Television
Frequency allocations can be found at
689:, especially in built-up urban areas. Atmospheric moisture reduces, or
666:
481:
471:
461:
420:
407:
1811:
2495–2690 MHz: Educational
Broadcast and Broadband Radio Services
1722:
2305–2315 MHz: WCS mobile broadband service uplink blocks A and B
1287:
transition from analog to digital over-the-air broadcast of television
1213:
2110–2170 MHz: 3G cellular communications (base station downlink)
1008:(with select channels in the 600 & 700 MHz bands left vacant)
5409:
5225:
5199:
5194:
5153:
5104:
5090:
4845:
4805:
4127:
3919:
3872:
3360:
3075:
3070:
3060:
3032:
3027:
3022:
2993:
2922:
1976:"Digital Audio Broadcasting (DAB) - History of Canadian Broadcasting"
1799:
1130:
1076:
1016:
981:
948:
944:
909:
905:
682:
620:
616:
548:
as the wavelengths range from one meter to one tenth of a meter (one
476:
456:
433:
428:
402:
392:
387:
170:
119:
115:
1366:
614–698 MHz: Mobile broadband shared with TV channels 38 to 51
1210:
1900–1980 MHz: 3G cellular communications (mobile phone uplink)
5230:
5125:
5017:
4830:
4767:
4075:
3526:
3390:
3380:
3375:
2917:
2813:
2727:
1475:
1450:
1175:
1129:
446.0–446.2 MHz : European unlicensed PMR service =>
744:
729:
625:
585:
76:
61:
57:
1513:
1432–1435 MHz: Proposed wireless medical telemetry service.
1497:
1390–1395 MHz: Proposed wireless medical telemetry service.
552:). Radio waves with frequencies above the UHF band fall into the
4772:
3355:
2912:
2907:
2103:
1863:
1703:
917:
735:
5365:
4968:
3876:
3197:
2684:
2433:
4018:
3370:
2932:
1775:
1246:
913:
577:
529:
2100:"Federal Government Spectrum Use Reports 225 MHz – 7.125 GHz"
825:
communication links and UHF television reception are usually
2755:
560:
frequency range. Lower frequency signals fall into the VHF (
2388:"Broadband Radio Service & Education Broadband Service"
1678:
2000–2020 MHz: lower AWS-4 downlink (mobile broadband)
1167:
863–865 MHz: Used for licence-exempt wireless systems.
1421:
894–896 MHz: Commercial aviation air-ground systems (
1405:
849–851 MHz: Commercial aviation air-ground systems (
2217:"Ligado Ex Parte re Iridium Analysis (PUBLIC 11-2-2016)"
1474:
941–960 MHz: Mixed studio-transmitter fixed links,
1198:
1710–1880 MHz: 2G Cellular communications (GSM1800)
1753:
2360–2390 MHz: Aircraft landing and safety systems
1138:
606–614 MHz: Radio microphones and radio-astronomy
1743:
2345–2350 MHz: WCS block D (AT&T is pursuing
1725:
2315–2320 MHz: WCS block C (AT&T is pursuing
1510:
1427–1432 MHz: Wireless medical telemetry service
1504:
1395–1400 MHz: Wireless medical telemetry service
1148:
Currently channels 21 to 37 and 39 to 48 are used for
716:
as the atmosphere warms and cools throughout the day.
653:
Radio waves in the UHF band travel almost entirely by
564:) or lower bands. UHF radio waves propagate mainly by
2065:"Going Once…Going Twice…The 700 Mhz Spectrum is Sold"
1632:
who is trying to provide service in cooperation with
810:
of dipoles and are used for mobile base stations and
974:
450.4875–451.5125 MHz:Fixed point-to-point link
5494:
5433:
5393:
5372:
5317:
5274:
5244:
5208:
5173:
5166:
5118:
5047:
5016:
5009:
4854:
4791:
4713:
4677:
4634:
4575:
4509:
4218:
3910:
3839:
3803:
3740:
3701:
3571:
3545:
3514:
3399:
3348:
3234:
3157:
3084:
3013:
2941:
2893:
2835:
2812:
2789:
1517:
failed to provide service by the required deadline.
1501:
failed to provide service by the required deadline.
1373:
617–652 MHz: Mobile broadband service downlink
158:
146:
134:
129:
87:
68:
49:
44:
2270:"Request for waiver and public interest statement"
1352:512–608 MHz: Medium-band TV channels 21 to 36
943:. Satellite phones also use this frequency in the
1691:2110–2155 MHz: AWS-1 blocks A, B, C, D, E, F
1652:1710–1755 MHz: AWS-1 blocks A, B, C, D, E, F
1622:Geostationary Operational Environmental Satellite
1379:663–698 MHz: Mobile broadband service uplink
1001:430–450 MHz: Amateur radio (70 cm band)
821:to be conveniently small. High gain antennas for
2423:Definition of frequency bands (VLF, ELF... etc.)
1639:1675–1695 MHz: Meteorological federal users
1607:1646.5–1656.5 MHz: proposed Ligado uplink 2
1604:1627.5–1637.5 MHz: proposed Ligado uplink 1
977:457.50625–459.9875 MHz: Land mobile service
1601:is seeking FCC permission for terrestrial use)
1576:1610–1660.5 MHz: Mobile Satellite Service
1535:is seeking FCC permission for terrestrial use)
1481:960–1215 MHz: Aeronautical radionavigation
1388:; bidders got full use after the transition to
1249:channels (and licenses sold for lower prices).
849:become practical. For satellite communication,
661:band there is little to no reflection from the
634:on a residence. This type of antenna, called a
1914:"China's Anti-Stealth Radar Comes to Fruition"
4980:
3888:
3209:
2696:
2445:
726:UHF television broadcasting § UHF vs VHF
502:
8:
1538:1526–1536 MHz: proposed Ligado downlink
1491:1300–1350 MHz: Long range radar systems
1316:420–450 MHz: Government radiolocation,
1313:, military aviation, and federal two-way use
1309:225–420 MHz: Government use, including
1271:, adjacent to the frequencies allocated for
1079:Personal Radio Service (Land mobile service)
971:406–406.1 MHz: Mobile satellite service
37:
4903:Global telecommunications regulation bodies
2155:"Wireless Medical Telemetry Service (WMTS)"
2045:. The Office of Communications. May 9, 2012
1694:2155–2180 MHz: AWS-3 blocks G, H, I, J
857:are used since satellites typically employ
657:(LOS) and ground reflection; unlike in the
5362:
5170:
5013:
4987:
4973:
4965:
4939:
3895:
3881:
3873:
3216:
3202:
3194:
2772:
2703:
2689:
2681:
2470:
2452:
2438:
2430:
1649:1695–1755 MHz: AWS-3 blocks A1 and B1
749:Corner reflector UHF-TV antenna from 1950s
509:
495:
185:
36:
27:"UHF" redirects here. For other uses, see
2416:U.S. cable television channel frequencies
1303:auction for this newly available spectrum
1156:users access on a licensed, shared basis.
3643:Output power of an analog TV transmitter
1646:mobile phone uplink (UL) operating band
1468:935–940 MHz: Commercial 2-way radio
1428:896–901 MHz: Commercial 2-way radio
1891:. John Wiley and Sons. pp. 55–58.
1850:
1541:1536–1559 MHz: proposed guard band
1058:406.1–420 MHz: Land mobile service
447:
361:
276:
195:
188:
2043:"800 MHz & 2.6 GHz Combined Award"
1370:. TV stations were relocated by 2020.
1141:470–862 MHz: Previously used for
3673:Direct-broadcast satellite television
2318:
2316:
2211:
2209:
2207:
2178:
2176:
1912:MINNICK, WENDELL (22 November 2014).
1774:, 802.11b, 802.11g, 802.11n wireless
1342:2-way "walkie-talkies", public safety
1334:450–470 MHz: UHF business band,
961:Examples of UHF frequency allocations
885:use. UHF channels are still used for
278:EU / NATO / US ECM
34:Electromagnetic spectrum 300–3000 MHz
7:
4949:
1034:Terrestrial Trunked Radio for Police
638:, is widely used at UHF frequencies.
576:, satellite communication including
3563:Vestigial sideband modulation (VSB)
2368:from the original on August 2, 2017
1759:2395–2400 MHz: Amateur radio (
1715:2300–2305 MHz: Amateur radio (
1548:Radio Navigation Satellite Services
1484:1240–1300 MHz: Amateur radio (
1254:Pan-American television frequencies
1216:2310–2450 MHz: Amateur radio (
1191:1240–1325 MHz: Amateur radio (
1101:1240–1300 MHz: Amateur radio (
604:, and numerous other applications.
25:
2159:Federal Communications Commission
1571:E1 band (overlapping with GPS L1)
1122:430–440 MHz: Amateur radio (
1119:(TETRA) service for emergency use
1038:430-440 MHz: Amateur radio (
937:public switched telephone network
817:The short wavelengths also allow
619:between 1 and 2 GHz and the
5521:
4948:
4938:
4929:
4928:
4917:
4538:Free-space optical communication
2664:
2063:Hansell, Saul (March 18, 2008).
1630:Crown Castle International Corp.
3558:Quadrature amplitude modulation
1697:2180–2200 MHz: upper AWS-4
1442:), cordless phones and stereo,
1231:digital television broadcasting
935:devices to be connected to the
5461:Error detection and correction
3722:Television channel frequencies
1888:Introduction to RF Propagation
1834:Digital terrestrial television
1444:radio-frequency identification
1363:and wireless medical telemetry
841:. At the top end of the band,
812:cellular base station antennas
778:in vehicles, and for portable
536:in the range between 300
1:
3693:Digital television transition
3522:Multichannel television sound
2426:". IK1QFK Home Page (vlf.it).
1305:was completed in March 2008.
1082:485–502 MHz: Analog and
681:from these objects can cause
4924:Telecommunication portal
4705:Telecommunications equipment
3765:Field strength in free space
3466:Horizontal blanking interval
1839:The Thing (listening device)
1336:General Mobile Radio Service
1097:Aeronautical radionavigation
5534:Comparison of radio systems
4441:Alexander Stepanovich Popov
3663:Superheterodyne transmitter
2804:Ultra-high-energy gamma ray
2001:"What is 700MHz Clearance?"
1386:Was auctioned in March 2008
991:for television broadcasting
871:UHF television broadcasting
643:Propagation characteristics
130:Ultra high frequency (IEEE)
5585:
5507:International broadcasting
5476:FM extended band in Brazil
4145:Telecommunications history
3501:Vertical blanking interval
2799:Very-high-energy gamma ray
1825:Digital Audio Broadcasting
1688:mobile broadband downlink
1522:Digital Audio Broadcasting
1229:UHF channels are used for
1143:analogue TV channels 21–69
1013:Digital Audio Broadcasting
920:cellular networks use UHF
723:
646:
623:between 2 and 4 GHz.
45:Ultra high frequency (ITU)
26:
5515:
5361:
4912:
4753:Public Switched Telephone
4565:telecommunication circuit
4526:Fiber-optic communication
4271:Francis Blake (telephone)
4066:Optical telecommunication
3476:Nominal analogue blanking
2718:
2660:
2468:
1885:Seybold, John S. (2005).
1788:radio-controlled aircraft
1239:cable television channels
1117:Terrestrial Trunked Radio
839:reflective array antennas
768:land mobile radio systems
655:line-of-sight propagation
544:(GHz), also known as the
4664:Orbital angular-momentum
4101:Satellite communications
3940:Communications satellite
2712:Electromagnetic spectrum
1829:regional implementations
1593:1626.5–1660.5 MHz:
1462:931–932 MHz: Pagers
1456:929–930 MHz: Pagers
1285:In 2009, as part of the
1243:All-Channel Receiver Act
875:land mobile radio system
5486:Shortwave relay station
5385:Audio signal processing
4543:Molecular communication
4366:Gardiner Greene Hubbard
4195:Undersea telegraph line
3930:Cable protection system
3795:Television interference
3668:Television receive-only
1980:Broadcasting-history.ca
1711:NASA Deep Space Network
1624:transmissions to three
1524:, unlike Canada/Europe)
1368:auctioned in April 2017
1318:amateur radio satellite
1280:analog mobile telephony
1071:amateur radio satellite
898:personal radio services
763:omnidirectional antenna
582:personal radio services
570:television broadcasting
5380:Audio data compression
4685:Communication protocol
4471:Charles Sumner Tainter
4286:Walter Houser Brattain
4231:Edwin Howard Armstrong
4039:Information revolution
3717:Microwave transmission
3683:Terrestrial television
3678:Television transmitter
3638:Intermediate frequency
3431:Chrominance subcarrier
2760:
1804:2483.5–2495 MHz:
1766:2400–2483.5 MHz:
1586:1618–1626.5 MHz:
1091:Terrestrial television
1086:Emergency services use
1047:Terrestrial television
1006:Terrestrial television
750:
742:
639:
5564:Television technology
5481:Multipath propagation
5304:MPEG-1 Audio Layer II
5174:Frequency allocations
5049:Frequency allocations
4659:Polarization-division
4391:Narinder Singh Kapany
4356:Erna Schneider Hoover
4276:Jagadish Chandra Bose
4256:Alexander Graham Bell
3987:online video platform
3589:Broadcast transmitter
2759:
2352:"Globalstar Overview"
2245:"Galileo Signal Plan"
2106:. Dec 2015 – Aug 2017
2069:Bits.blos.nytimes.com
1235:over the air channels
984:(Land mobile service)
859:circular polarization
800:rubber ducky antennas
759:quarter-wave monopole
748:
733:
687:multipath propagation
629:
5434:Technical (emission)
4501:Vladimir K. Zworykin
4461:Almon Brown Strowger
4431:Charles Grafton Page
4086:Prepaid mobile phone
4014:Electrical telegraph
3831:Zero reference pulse
3816:Field strength meter
3553:Frequency modulation
3461:Horizontal scan rate
1732:2320–2345 MHz:
1709:2290–2300 MHz:
1702:2200–2290 MHz:
1684:2110–2200 MHz:
1666:1920–1930 MHz:
1642:1695–1780 MHz:
1620:1670–1675 MHz:
1567:1559–1591 MHz:
1560:1593–1610 MHz:
1553:1563–1587 MHz:
1550:(RNSS) Upper L-band
1546:1559–1610 MHz:
1527:1525–1559 MHz:
1340:Family Radio Service
1261:Title 47 CFR Part 15
1201:1880–1900 MHz:
1115:380–399.9 MHz:
1011:1452–1492 MHz:
922:cellular frequencies
714:tropospheric ducting
554:super-high frequency
522:Ultra high frequency
39:Ultra high frequency
29:UHF (disambiguation)
18:Ultra-high-frequency
4451:Johann Philipp Reis
4210:Wireless revolution
4172:The Telephone Cases
4029:Hydraulic telegraph
3770:Noise (electronics)
3633:Intercarrier method
3593:Transmitter station
3228:broadcasting topics
2845:Extreme ultraviolet
1590:uplink and downlink
1172:Short range devices
1095:960–1215 MHz:
562:very high frequency
41:
4649:Frequency-division
4626:Telephone exchange
4496:Charles Wheatstone
4426:Jun-ichi Nishizawa
4401:Innocenzo Manzetti
4336:Reginald Fessenden
4071:Optical telegraphy
3904:Telecommunications
3658:Split sound system
3608:Differential phase
2850:Vacuum ultraviolet
2761:
2420:Tomislav Stimac, "
2301:. January 29, 2015
2295:"AWS-3 Transition"
1780:IEEE 802.15.4-2006
1671:cordless telephone
1449:928–929 MHz:
1434:902–928 MHz:
1384:698–806 MHz:
1355:608–614 MHz:
1206:cordless telephone
1170:863–870 MHz:
1089:510–622 MHz:
1075:476–477 MHz:
1061:430–440 MHz:
1045:470-694 MHz:
1032:380-400 MHz:
1004:470–806 MHz:
987:503–694 MHz:
980:476–477 MHz:
887:digital television
855:turnstile antennas
819:high gain antennas
804:inverted F antenna
761:, the most common
751:
743:
640:
632:television antenna
448:Other TV and radio
5546:
5545:
5542:
5541:
5466:FM broadcast band
5373:Technical (audio)
5270:
5269:
5162:
5161:
4962:
4961:
4700:Store and forward
4695:Data transmission
4609:Network switching
4560:Transmission line
4406:Guglielmo Marconi
4371:Internet pioneers
4236:Mohamed M. Atalla
4205:Whistled language
3870:
3869:
3785:Radiation pattern
3603:Differential gain
3225:Analog television
3191:
3190:
2895:Visible (optical)
2678:
2677:
2655:
2654:
2161:. 3 November 2011
1438:, amateur radio (
1275:network devices.
982:UHF citizens band
835:corner reflectors
753:The length of an
669:propagation), or
649:Radio propagation
540:(MHz) and 3
534:radio frequencies
519:
518:
272:
271:
184:
183:
16:(Redirected from
5576:
5528:Radio portal
5526:
5525:
5524:
5502:History of radio
5446:AM expanded band
5363:
5246:Commercial radio
5171:
5014:
4989:
4982:
4975:
4966:
4952:
4951:
4942:
4941:
4932:
4931:
4922:
4921:
4920:
4793:Notable networks
4783:Wireless network
4723:Cellular network
4715:Types of network
4690:Computer network
4577:Network topology
4491:Thomas A. Watson
4346:Oliver Heaviside
4331:Philo Farnsworth
4306:Daniel Davis Jr.
4281:Charles Bourseul
4241:John Logie Baird
3950:Data compression
3945:Computer network
3897:
3890:
3883:
3874:
3712:Frequency offset
3653:Residual carrier
3598:Cavity amplifier
3496:Television lines
3218:
3211:
3204:
3195:
2782:
2780:
2773:
2766:
2705:
2698:
2691:
2682:
2671:Radio portal
2669:
2668:
2667:
2471:
2454:
2447:
2440:
2431:
2403:
2402:
2400:
2399:
2384:
2378:
2377:
2375:
2373:
2367:
2356:
2348:
2342:
2341:
2339:
2337:
2328:
2320:
2311:
2310:
2308:
2306:
2291:
2285:
2284:
2282:
2281:
2266:
2260:
2259:
2257:
2255:
2241:
2235:
2234:
2232:
2230:
2221:
2213:
2202:
2201:
2199:
2198:
2188:
2180:
2171:
2170:
2168:
2166:
2151:
2145:
2144:
2142:
2140:
2135:. March 15, 2013
2130:
2122:
2116:
2115:
2113:
2111:
2096:
2090:
2086:
2080:
2079:
2077:
2075:
2060:
2054:
2053:
2051:
2050:
2039:
2033:
2032:
2030:
2028:
2023:
2015:
2009:
2008:
1997:
1991:
1990:
1988:
1986:
1972:
1966:
1965:
1963:
1961:
1956:on April 4, 2019
1955:
1949:. Archived from
1944:
1936:
1930:
1929:
1927:
1925:
1909:
1903:
1902:
1882:
1876:
1875:
1873:
1871:
1855:
1763:, upper segment)
1719:, lower segment)
1181:devices such as
933:mobile computing
883:mobile telephone
847:parabolic dishes
808:collinear arrays
780:wireless devices
636:Yagi–Uda antenna
611:defines the UHF
602:satellite phones
532:designation for
511:
504:
497:
204:
203:
186:
154:
148:Wavelength range
142:
141:300 MHz to 1 GHz
83:
70:Wavelength range
64:
42:
40:
21:
5584:
5583:
5579:
5578:
5577:
5575:
5574:
5573:
5549:
5548:
5547:
5538:
5522:
5520:
5511:
5490:
5471:FM broadcasting
5441:AM broadcasting
5429:
5389:
5368:
5357:
5313:
5266:
5240:
5209:Digital systems
5204:
5189:
5158:
5119:Digital systems
5114:
5043:
5005:
4993:
4963:
4958:
4918:
4916:
4908:
4850:
4787:
4709:
4673:
4630:
4579:
4571:
4512:
4505:
4411:Robert Metcalfe
4266:Tim Berners-Lee
4214:
4034:Information Age
3906:
3901:
3871:
3866:
3835:
3811:Distortionmeter
3799:
3736:
3697:
3628:Frequency mixer
3584:Antenna (radio)
3567:
3541:
3510:
3451:Composite video
3395:
3344:
3230:
3222:
3192:
3187:
3153:
3080:
3055:
3041:
3009:
2937:
2889:
2831:
2808:
2785:
2778:
2771:
2764:
2762:
2714:
2709:
2679:
2674:
2665:
2663:
2656:
2651:
2648:
2647:300 GHz/1 mm
2646:
2636:
2633:
2631:
2621:
2618:
2616:
2606:
2603:
2602:300 MHz/1 m
2601:
2591:
2588:
2586:
2576:
2573:
2571:
2561:
2558:
2557:300 kHz/1 km
2556:
2546:
2543:
2541:
2531:
2528:
2526:
2516:
2513:
2512:300 Hz/1 Mm
2511:
2501:
2498:
2496:
2486:
2483:
2481:
2464:
2458:
2412:
2407:
2406:
2397:
2395:
2394:. February 2016
2386:
2385:
2381:
2371:
2369:
2365:
2354:
2350:
2349:
2345:
2335:
2333:
2331:Ecfsapi.fcc.gov
2326:
2322:
2321:
2314:
2304:
2302:
2293:
2292:
2288:
2279:
2277:
2268:
2267:
2263:
2253:
2251:
2243:
2242:
2238:
2228:
2226:
2224:Ecfsapi.fcc.gov
2219:
2215:
2214:
2205:
2196:
2194:
2186:
2182:
2181:
2174:
2164:
2162:
2153:
2152:
2148:
2138:
2136:
2128:
2126:"T-Band Report"
2124:
2123:
2119:
2109:
2107:
2098:
2097:
2093:
2087:
2083:
2073:
2071:
2062:
2061:
2057:
2048:
2046:
2041:
2040:
2036:
2026:
2024:
2021:
2017:
2016:
2012:
1999:
1998:
1994:
1984:
1982:
1974:
1973:
1969:
1959:
1957:
1953:
1942:
1938:
1937:
1933:
1923:
1921:
1918:Defensenews.com
1911:
1910:
1906:
1899:
1884:
1883:
1879:
1869:
1867:
1857:
1856:
1852:
1847:
1821:
1796:microwave ovens
1792:spread spectrum
1761:13 cm band
1734:Satellite radio
1717:13 cm band
1634:Ligado Networks
1486:23 cm band
1440:33 cm band
1361:radio astronomy
1326:70 cm band
1269:microwave ovens
1227:
1218:13 cm band
1193:23 cm band
1124:70 cm band
1112:
1103:23 cm band
1067:70 cm band
1055:
1040:70 cm band
1029:
998:
968:
963:
868:
784:cordless phones
728:
722:
703:frequency reuse
651:
645:
598:cordless phones
515:
486:
443:
424:
411:
357:
180:
161:
152:
149:
140:
137:
136:Frequency range
125:
90:
74:
71:
55:
52:
51:Frequency range
38:
35:
32:
23:
22:
15:
12:
11:
5:
5582:
5580:
5572:
5571:
5566:
5561:
5559:Radio spectrum
5551:
5550:
5544:
5543:
5540:
5539:
5537:
5536:
5531:
5516:
5513:
5512:
5510:
5509:
5504:
5498:
5496:
5492:
5491:
5489:
5488:
5483:
5478:
5473:
5468:
5463:
5458:
5453:
5448:
5443:
5437:
5435:
5431:
5430:
5428:
5427:
5422:
5420:Kahn-Hazeltine
5417:
5412:
5407:
5401:
5399:
5391:
5390:
5388:
5387:
5382:
5376:
5374:
5370:
5369:
5367:Related topics
5366:
5359:
5358:
5356:
5355:
5350:
5345:
5340:
5335:
5330:
5324:
5322:
5315:
5314:
5312:
5311:
5306:
5301:
5296:
5291:
5286:
5280:
5278:
5272:
5271:
5268:
5267:
5265:
5264:
5263:
5262:
5251:
5249:
5242:
5241:
5239:
5238:
5233:
5228:
5223:
5218:
5212:
5210:
5206:
5205:
5203:
5202:
5197:
5192:
5187:
5183:
5177:
5175:
5168:
5164:
5163:
5160:
5159:
5157:
5156:
5151:
5148:
5143:
5138:
5133:
5128:
5122:
5120:
5116:
5115:
5113:
5112:
5102:
5084:
5074:
5064:
5053:
5051:
5045:
5044:
5042:
5041:
5036:
5031:
5025:
5023:
5011:
5007:
5006:
4994:
4992:
4991:
4984:
4977:
4969:
4960:
4959:
4957:
4956:
4946:
4936:
4926:
4913:
4910:
4909:
4907:
4906:
4899:
4894:
4889:
4884:
4879:
4878:
4877:
4872:
4864:
4858:
4856:
4852:
4851:
4849:
4848:
4843:
4838:
4833:
4828:
4823:
4818:
4813:
4808:
4803:
4797:
4795:
4789:
4788:
4786:
4785:
4780:
4775:
4770:
4765:
4760:
4755:
4750:
4745:
4740:
4735:
4730:
4725:
4719:
4717:
4711:
4710:
4708:
4707:
4702:
4697:
4692:
4687:
4681:
4679:
4675:
4674:
4672:
4671:
4666:
4661:
4656:
4651:
4646:
4644:Space-division
4640:
4638:
4632:
4631:
4629:
4628:
4623:
4622:
4621:
4616:
4606:
4605:
4604:
4594:
4589:
4583:
4581:
4573:
4572:
4570:
4569:
4568:
4567:
4557:
4556:
4555:
4545:
4540:
4535:
4534:
4533:
4523:
4517:
4515:
4507:
4506:
4504:
4503:
4498:
4493:
4488:
4483:
4481:Camille Tissot
4478:
4473:
4468:
4463:
4458:
4456:Claude Shannon
4453:
4448:
4446:Tivadar Puskás
4443:
4438:
4433:
4428:
4423:
4418:
4416:Antonio Meucci
4413:
4408:
4403:
4398:
4393:
4388:
4386:Charles K. Kao
4383:
4378:
4373:
4368:
4363:
4361:Harold Hopkins
4358:
4353:
4348:
4343:
4338:
4333:
4328:
4323:
4318:
4313:
4308:
4303:
4298:
4293:
4288:
4283:
4278:
4273:
4268:
4263:
4261:Emile Berliner
4258:
4253:
4248:
4243:
4238:
4233:
4228:
4222:
4220:
4216:
4215:
4213:
4212:
4207:
4202:
4200:Videotelephony
4197:
4192:
4191:
4190:
4185:
4175:
4168:
4163:
4157:
4152:
4147:
4142:
4137:
4136:
4135:
4130:
4125:
4115:
4114:
4113:
4103:
4098:
4096:Radiotelephone
4093:
4088:
4083:
4078:
4073:
4068:
4063:
4062:
4061:
4051:
4046:
4041:
4036:
4031:
4026:
4021:
4016:
4011:
4006:
4001:
4000:
3999:
3994:
3989:
3984:
3982:Internet video
3974:
3973:
3972:
3967:
3962:
3957:
3947:
3942:
3937:
3932:
3927:
3922:
3916:
3914:
3908:
3907:
3902:
3900:
3899:
3892:
3885:
3877:
3868:
3867:
3865:
3864:
3859:
3854:
3849:
3843:
3841:
3837:
3836:
3834:
3833:
3828:
3823:
3818:
3813:
3807:
3805:
3801:
3800:
3798:
3797:
3792:
3787:
3782:
3777:
3772:
3767:
3762:
3757:
3752:
3746:
3744:
3738:
3737:
3735:
3734:
3729:
3724:
3719:
3714:
3708:
3706:
3699:
3698:
3696:
3695:
3690:
3685:
3680:
3675:
3670:
3665:
3660:
3655:
3650:
3645:
3640:
3635:
3630:
3625:
3620:
3618:Dipole antenna
3615:
3610:
3605:
3600:
3595:
3586:
3581:
3575:
3573:
3569:
3568:
3566:
3565:
3560:
3555:
3549:
3547:
3543:
3542:
3540:
3539:
3534:
3532:Sound-in-Syncs
3529:
3524:
3518:
3516:
3512:
3511:
3509:
3508:
3503:
3498:
3493:
3488:
3483:
3478:
3473:
3468:
3463:
3458:
3453:
3448:
3443:
3438:
3433:
3428:
3423:
3421:Blanking level
3418:
3413:
3403:
3401:
3397:
3396:
3394:
3393:
3388:
3383:
3378:
3373:
3368:
3363:
3358:
3352:
3350:
3346:
3345:
3343:
3342:
3328:
3286:
3276:
3271:
3266:
3256:
3251:
3246:
3240:
3238:
3232:
3231:
3223:
3221:
3220:
3213:
3206:
3198:
3189:
3188:
3186:
3185:
3180:
3175:
3170:
3164:
3162:
3155:
3154:
3152:
3151:
3146:
3141:
3136:
3131:
3126:
3121:
3116:
3111:
3106:
3101:
3096:
3090:
3088:
3082:
3081:
3079:
3078:
3073:
3068:
3063:
3058:
3053:
3049:
3044:
3039:
3035:
3030:
3025:
3019:
3017:
3011:
3010:
3008:
3007:
3002:
2997:
2975:
2970:
2947:
2945:
2939:
2938:
2936:
2935:
2930:
2925:
2920:
2915:
2910:
2905:
2899:
2897:
2891:
2890:
2888:
2887:
2882:
2877:
2872:
2867:
2862:
2857:
2852:
2847:
2841:
2839:
2833:
2832:
2830:
2829:
2824:
2818:
2816:
2810:
2809:
2807:
2806:
2801:
2795:
2793:
2787:
2786:
2784:
2783:
2750:
2745:
2740:
2735:
2730:
2725:
2719:
2716:
2715:
2710:
2708:
2707:
2700:
2693:
2685:
2676:
2675:
2661:
2658:
2657:
2653:
2652:
2639:
2637:
2632:30 GHz/10 mm
2624:
2622:
2609:
2607:
2594:
2592:
2587:30 MHz/10 m
2579:
2577:
2564:
2562:
2549:
2547:
2542:30 kHz/10 km
2534:
2532:
2519:
2517:
2504:
2502:
2497:30 Hz/10 Mm
2489:
2487:
2474:
2469:
2466:
2465:
2461:Radio spectrum
2459:
2457:
2456:
2449:
2442:
2434:
2428:
2427:
2418:
2411:
2410:External links
2408:
2405:
2404:
2379:
2359:Globalstar.com
2343:
2312:
2286:
2261:
2236:
2203:
2172:
2146:
2117:
2091:
2081:
2055:
2034:
2010:
1992:
1967:
1940:"400 MHz Plan"
1931:
1904:
1897:
1877:
1849:
1848:
1846:
1843:
1842:
1841:
1836:
1831:
1820:
1817:
1816:
1815:
1812:
1809:
1802:
1790:(strictly for
1764:
1757:
1754:
1751:
1748:
1741:
1730:
1723:
1720:
1713:
1707:
1700:
1699:
1698:
1695:
1692:
1682:
1679:
1676:
1673:
1664:
1661:
1658:
1657:
1656:
1653:
1650:
1640:
1637:
1626:earth stations
1618:
1615:
1612:
1611:
1610:
1609:
1608:
1605:
1591:
1584:
1574:
1573:
1572:
1565:
1558:
1544:
1543:
1542:
1539:
1525:
1518:
1511:
1508:
1505:
1502:
1495:
1492:
1489:
1482:
1479:
1472:
1469:
1466:
1463:
1460:
1457:
1454:
1447:
1432:
1429:
1426:
1419:
1416:
1413:
1410:
1403:
1400:
1397:
1394:
1382:
1381:
1380:
1377:
1374:
1364:
1353:
1350:
1343:
1332:
1314:
1226:
1223:
1222:
1221:
1214:
1211:
1208:
1199:
1196:
1189:
1186:
1183:NarrowBand-IoT
1168:
1165:
1164:
1163:
1160:
1157:
1145:(until 2012).
1139:
1136:
1133:
1127:
1120:
1111:
1110:United Kingdom
1108:
1107:
1106:
1099:
1093:
1087:
1080:
1073:
1059:
1054:
1051:
1050:
1049:
1043:
1036:
1028:
1025:
1024:
1023:
1020:
1009:
1002:
997:
994:
993:
992:
985:
978:
975:
972:
967:
964:
962:
959:
894:two-way radios
867:
864:
823:point-to-point
802:or the planar
776:two-way radios
772:walkie-talkies
739:two-way radios
721:
718:
647:Main article:
644:
641:
594:walkie-talkies
546:decimetre band
517:
516:
514:
513:
506:
499:
491:
488:
487:
485:
484:
479:
474:
469:
464:
459:
453:
450:
449:
445:
444:
442:
441:
436:
431:
426:
422:
418:
413:
409:
405:
400:
395:
390:
385:
380:
375:
369:
366:
365:
359:
358:
356:
355:
350:
345:
340:
335:
330:
325:
320:
315:
310:
305:
300:
295:
290:
284:
281:
280:
274:
273:
270:
269:
264:
259:
254:
248:
247:
242:
237:
232:
226:
225:
220:
215:
210:
200:
199:
193:
192:
182:
181:
179:
178:
168:
164:
162:
159:
156:
155:
150:
147:
144:
143:
138:
135:
132:
131:
127:
126:
124:
123:
112:
93:
91:
88:
85:
84:
72:
69:
66:
65:
53:
50:
47:
46:
33:
24:
14:
13:
10:
9:
6:
4:
3:
2:
5581:
5570:
5567:
5565:
5562:
5560:
5557:
5556:
5554:
5535:
5532:
5530:
5529:
5518:
5517:
5514:
5508:
5505:
5503:
5500:
5499:
5497:
5493:
5487:
5484:
5482:
5479:
5477:
5474:
5472:
5469:
5467:
5464:
5462:
5459:
5457:
5456:Digital radio
5454:
5452:
5449:
5447:
5444:
5442:
5439:
5438:
5436:
5432:
5426:
5423:
5421:
5418:
5416:
5413:
5411:
5408:
5406:
5403:
5402:
5400:
5397:
5392:
5386:
5383:
5381:
5378:
5377:
5375:
5371:
5364:
5360:
5354:
5351:
5349:
5346:
5344:
5341:
5339:
5336:
5334:
5331:
5329:
5326:
5325:
5323:
5320:
5316:
5310:
5307:
5305:
5302:
5300:
5297:
5295:
5292:
5290:
5287:
5285:
5282:
5281:
5279:
5277:
5273:
5261:
5258:
5257:
5256:
5253:
5252:
5250:
5247:
5243:
5237:
5234:
5232:
5229:
5227:
5224:
5222:
5219:
5217:
5214:
5213:
5211:
5207:
5201:
5198:
5196:
5193:
5191:
5184:
5182:
5179:
5178:
5176:
5172:
5169:
5165:
5155:
5152:
5149:
5147:
5144:
5142:
5139:
5137:
5134:
5132:
5129:
5127:
5124:
5123:
5121:
5117:
5110:
5106:
5103:
5100:
5096:
5092:
5088:
5085:
5082:
5078:
5075:
5072:
5068:
5065:
5062:
5058:
5055:
5054:
5052:
5050:
5046:
5040:
5037:
5035:
5032:
5030:
5027:
5026:
5024:
5022:
5019:
5015:
5012:
5008:
5004:
5001:
5000:digital audio
4997:
4990:
4985:
4983:
4978:
4976:
4971:
4970:
4967:
4955:
4947:
4945:
4937:
4935:
4927:
4925:
4915:
4914:
4911:
4904:
4900:
4898:
4895:
4893:
4890:
4888:
4885:
4883:
4880:
4876:
4873:
4871:
4868:
4867:
4865:
4863:
4860:
4859:
4857:
4853:
4847:
4844:
4842:
4839:
4837:
4834:
4832:
4829:
4827:
4824:
4822:
4819:
4817:
4814:
4812:
4809:
4807:
4804:
4802:
4799:
4798:
4796:
4794:
4790:
4784:
4781:
4779:
4776:
4774:
4771:
4769:
4766:
4764:
4761:
4759:
4756:
4754:
4751:
4749:
4746:
4744:
4741:
4739:
4736:
4734:
4731:
4729:
4726:
4724:
4721:
4720:
4718:
4716:
4712:
4706:
4703:
4701:
4698:
4696:
4693:
4691:
4688:
4686:
4683:
4682:
4680:
4676:
4670:
4669:Code-division
4667:
4665:
4662:
4660:
4657:
4655:
4654:Time-division
4652:
4650:
4647:
4645:
4642:
4641:
4639:
4637:
4633:
4627:
4624:
4620:
4617:
4615:
4612:
4611:
4610:
4607:
4603:
4600:
4599:
4598:
4595:
4593:
4590:
4588:
4585:
4584:
4582:
4580:and switching
4578:
4574:
4566:
4563:
4562:
4561:
4558:
4554:
4551:
4550:
4549:
4546:
4544:
4541:
4539:
4536:
4532:
4531:optical fiber
4529:
4528:
4527:
4524:
4522:
4521:Coaxial cable
4519:
4518:
4516:
4514:
4508:
4502:
4499:
4497:
4494:
4492:
4489:
4487:
4484:
4482:
4479:
4477:
4474:
4472:
4469:
4467:
4464:
4462:
4459:
4457:
4454:
4452:
4449:
4447:
4444:
4442:
4439:
4437:
4436:Radia Perlman
4434:
4432:
4429:
4427:
4424:
4422:
4419:
4417:
4414:
4412:
4409:
4407:
4404:
4402:
4399:
4397:
4394:
4392:
4389:
4387:
4384:
4382:
4379:
4377:
4374:
4372:
4369:
4367:
4364:
4362:
4359:
4357:
4354:
4352:
4349:
4347:
4344:
4342:
4339:
4337:
4334:
4332:
4329:
4327:
4326:Lee de Forest
4324:
4322:
4321:Thomas Edison
4319:
4317:
4314:
4312:
4311:Donald Davies
4309:
4307:
4304:
4302:
4299:
4297:
4296:Claude Chappe
4294:
4292:
4289:
4287:
4284:
4282:
4279:
4277:
4274:
4272:
4269:
4267:
4264:
4262:
4259:
4257:
4254:
4252:
4249:
4247:
4244:
4242:
4239:
4237:
4234:
4232:
4229:
4227:
4224:
4223:
4221:
4217:
4211:
4208:
4206:
4203:
4201:
4198:
4196:
4193:
4189:
4186:
4184:
4181:
4180:
4179:
4176:
4174:
4173:
4169:
4167:
4164:
4161:
4158:
4156:
4153:
4151:
4148:
4146:
4143:
4141:
4140:Smoke signals
4138:
4134:
4131:
4129:
4126:
4124:
4121:
4120:
4119:
4118:Semiconductor
4116:
4112:
4109:
4108:
4107:
4104:
4102:
4099:
4097:
4094:
4092:
4089:
4087:
4084:
4082:
4079:
4077:
4074:
4072:
4069:
4067:
4064:
4060:
4057:
4056:
4055:
4052:
4050:
4047:
4045:
4042:
4040:
4037:
4035:
4032:
4030:
4027:
4025:
4022:
4020:
4017:
4015:
4012:
4010:
4007:
4005:
4002:
3998:
3995:
3993:
3990:
3988:
3985:
3983:
3980:
3979:
3978:
3977:Digital media
3975:
3971:
3968:
3966:
3963:
3961:
3958:
3956:
3953:
3952:
3951:
3948:
3946:
3943:
3941:
3938:
3936:
3933:
3931:
3928:
3926:
3923:
3921:
3918:
3917:
3915:
3913:
3909:
3905:
3898:
3893:
3891:
3886:
3884:
3879:
3878:
3875:
3863:
3860:
3858:
3855:
3853:
3850:
3848:
3845:
3844:
3842:
3838:
3832:
3829:
3827:
3824:
3822:
3819:
3817:
3814:
3812:
3809:
3808:
3806:
3802:
3796:
3793:
3791:
3788:
3786:
3783:
3781:
3778:
3776:
3773:
3771:
3768:
3766:
3763:
3761:
3758:
3756:
3753:
3751:
3748:
3747:
3745:
3743:
3739:
3733:
3730:
3728:
3725:
3723:
3720:
3718:
3715:
3713:
3710:
3709:
3707:
3704:
3700:
3694:
3691:
3689:
3686:
3684:
3681:
3679:
3676:
3674:
3671:
3669:
3666:
3664:
3661:
3659:
3656:
3654:
3651:
3649:
3646:
3644:
3641:
3639:
3636:
3634:
3631:
3629:
3626:
3624:
3621:
3619:
3616:
3614:
3611:
3609:
3606:
3604:
3601:
3599:
3596:
3594:
3590:
3587:
3585:
3582:
3580:
3577:
3576:
3574:
3570:
3564:
3561:
3559:
3556:
3554:
3551:
3550:
3548:
3544:
3538:
3535:
3533:
3530:
3528:
3525:
3523:
3520:
3519:
3517:
3513:
3507:
3506:White clipper
3504:
3502:
3499:
3497:
3494:
3492:
3489:
3487:
3484:
3482:
3479:
3477:
3474:
3472:
3469:
3467:
3464:
3462:
3459:
3457:
3456:Frame (video)
3454:
3452:
3449:
3447:
3444:
3442:
3439:
3437:
3434:
3432:
3429:
3427:
3424:
3422:
3419:
3417:
3414:
3412:
3408:
3405:
3404:
3402:
3398:
3392:
3389:
3387:
3384:
3382:
3379:
3377:
3374:
3372:
3369:
3367:
3364:
3362:
3359:
3357:
3354:
3353:
3351:
3349:Color systems
3347:
3340:
3336:
3332:
3329:
3326:
3322:
3318:
3314:
3310:
3306:
3302:
3298:
3294:
3290:
3287:
3284:
3280:
3277:
3275:
3272:
3270:
3267:
3264:
3260:
3257:
3255:
3252:
3250:
3247:
3245:
3242:
3241:
3239:
3237:
3233:
3229:
3226:
3219:
3214:
3212:
3207:
3205:
3200:
3199:
3196:
3184:
3181:
3179:
3176:
3174:
3171:
3169:
3166:
3165:
3163:
3160:
3156:
3150:
3147:
3145:
3142:
3140:
3137:
3135:
3132:
3130:
3127:
3125:
3122:
3120:
3117:
3115:
3112:
3110:
3107:
3105:
3102:
3100:
3097:
3095:
3092:
3091:
3089:
3087:
3083:
3077:
3074:
3072:
3069:
3067:
3064:
3062:
3059:
3057:
3050:
3048:
3045:
3043:
3036:
3034:
3031:
3029:
3026:
3024:
3021:
3020:
3018:
3016:
3012:
3006:
3003:
3001:
2998:
2995:
2991:
2987:
2983:
2979:
2976:
2974:
2971:
2968:
2964:
2960:
2956:
2952:
2949:
2948:
2946:
2944:
2940:
2934:
2931:
2929:
2926:
2924:
2921:
2919:
2916:
2914:
2911:
2909:
2906:
2904:
2901:
2900:
2898:
2896:
2892:
2886:
2883:
2881:
2878:
2876:
2873:
2871:
2868:
2866:
2863:
2861:
2858:
2856:
2853:
2851:
2848:
2846:
2843:
2842:
2840:
2838:
2834:
2828:
2825:
2823:
2820:
2819:
2817:
2815:
2811:
2805:
2802:
2800:
2797:
2796:
2794:
2792:
2788:
2781:
2777:
2770:
2758:
2754:
2751:
2749:
2746:
2744:
2741:
2739:
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2699:
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2673:
2672:
2659:
2650:
2649:3 THz/0.1 mm
2645:
2644:
2638:
2635:
2634:300 GHz/1 mm
2630:
2629:
2623:
2620:
2619:30 GHz/10 mm
2617:3 GHz/100 mm
2615:
2614:
2608:
2605:
2604:3 GHz/100 mm
2600:
2599:
2593:
2590:
2585:
2584:
2578:
2575:
2572:3 MHz/100 m
2570:
2569:
2563:
2560:
2555:
2554:
2548:
2545:
2544:300 kHz/1 km
2540:
2539:
2533:
2530:
2529:30 kHz/10 km
2527:3 kHz/100 km
2525:
2524:
2518:
2515:
2514:3 kHz/100 km
2510:
2509:
2503:
2500:
2495:
2494:
2488:
2485:
2482:3 Hz/100 Mm
2480:
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2249:Navipedia.net
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1331:
1327:
1323:
1322:amateur radio
1319:
1315:
1312:
1308:
1307:
1306:
1304:
1301:'s scheduled
1300:
1296:
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1288:
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1270:
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1225:United States
1224:
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1128:
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1100:
1098:
1094:
1092:
1088:
1085:
1081:
1078:
1074:
1072:
1068:
1064:
1063:Amateur radio
1060:
1057:
1056:
1052:
1048:
1044:
1041:
1037:
1035:
1031:
1030:
1026:
1021:
1018:
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1007:
1003:
1000:
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986:
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979:
976:
973:
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969:
965:
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950:
946:
942:
938:
934:
930:
929:mobile phones
925:
923:
919:
915:
911:
907:
903:
899:
895:
890:
888:
884:
880:
879:trunked radio
876:
872:
865:
863:
860:
856:
852:
848:
844:
843:slot antennas
840:
836:
832:
828:
824:
820:
815:
813:
809:
805:
801:
797:
793:
789:
785:
781:
777:
773:
769:
764:
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756:
747:
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719:
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628:
624:
622:
618:
614:
610:
605:
603:
599:
595:
591:
587:
583:
579:
575:
571:
567:
566:line of sight
563:
559:
555:
551:
547:
543:
539:
535:
531:
527:
523:
512:
507:
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209:
206:
205:
202:
201:
198:
194:
191:
187:
176:
172:
169:
166:
165:
163:
160:Related bands
157:
151:
145:
139:
133:
128:
121:
117:
113:
110:
106:
102:
98:
95:
94:
92:
89:Related bands
86:
82:
78:
73:
67:
63:
59:
54:
48:
43:
30:
19:
5519:
5108:
5003:broadcasting
4636:Multiplexing
4511:Transmission
4476:Nikola Tesla
4466:Henry Sutton
4421:Samuel Morse
4351:Robert Hooke
4316:Amos Dolbear
4251:John Bardeen
4170:
4150:Telautograph
4054:Mobile phone
4009:Edholm's law
3992:social media
3925:Broadcasting
3857:Hanover bars
3726:
3648:Pre-emphasis
3572:Transmission
3537:Zweikanalton
3441:Color killer
3366:Clear-Vision
3108:
2763:
2662:
2641:
2640:
2626:
2625:
2611:
2610:
2597:
2596:
2595:
2589:300 MHz/1 m
2581:
2580:
2574:30 MHz/10 m
2566:
2565:
2559:3 MHz/100 m
2551:
2550:
2536:
2535:
2521:
2520:
2506:
2505:
2499:300 Hz/1 Mm
2491:
2490:
2484:30 Hz/10 Mm
2476:
2475:
2421:
2396:. Retrieved
2391:
2382:
2370:. Retrieved
2358:
2346:
2334:. Retrieved
2330:
2303:. Retrieved
2299:Ntia.doc.gov
2298:
2289:
2278:. Retrieved
2276:. 2016-06-04
2273:
2264:
2252:. Retrieved
2248:
2239:
2227:. Retrieved
2223:
2195:. Retrieved
2193:. 2017-10-10
2190:
2163:. Retrieved
2158:
2149:
2137:. Retrieved
2132:
2120:
2108:. Retrieved
2094:
2084:
2072:. Retrieved
2068:
2058:
2047:. Retrieved
2037:
2025:. Retrieved
2013:
2004:
1995:
1983:. Retrieved
1979:
1970:
1958:. Retrieved
1951:the original
1946:
1934:
1922:. Retrieved
1917:
1907:
1887:
1880:
1868:. Retrieved
1862:
1853:
1284:
1277:
1258:
1251:
1228:
989:UHF channels
956:
953:
926:
891:
869:
866:Applications
831:log periodic
816:
752:
711:
699:
697:TV signals.
652:
606:
545:
525:
521:
520:
382:
251:
173: /
118: /
107: /
103: /
99: /
5451:Cable radio
5394:Technical (
5154:DVB-T2 Lite
5010:Terrestrial
4836:NPL network
4548:Radio waves
4486:Alfred Vail
4396:Hedy Lamarr
4381:Dawon Kahng
4341:Elisha Gray
4301:Yogen Dalal
4226:Nasir Ahmed
4160:Teleprinter
4024:Heliographs
3826:VIT signals
3821:Vectorscope
3760:Earth bulge
3742:Propagation
3705:& bands
3703:Frequencies
3486:Raster scan
3426:Chrominance
3416:Black level
3411:front porch
3178:Medium wave
2855:Lyman-alpha
2837:Ultraviolet
2776:wavelengths
2769:frequencies
2733:Ultraviolet
2372:17 December
2336:17 December
2305:17 December
2254:17 December
2229:17 December
2165:17 December
2139:17 December
2110:October 21,
1960:November 3,
1924:25 November
1870:17 December
1772:IEEE 802.11
1747:deployment)
1729:deployment)
1579:1610–1618:
1446:, datalinks
1347:land mobile
1311:meteorology
1053:New Zealand
788:cell phones
679:diffraction
675:wavelengths
671:ground wave
574:cell phones
190:Radio bands
153:1 m to 3 dm
5553:Categories
5333:DirectBand
5319:Subcarrier
5021:modulation
4882:Antarctica
4841:Toasternet
4763:Television
4246:Paul Baran
4178:Television
4162:(teletype)
4155:Telegraphy
4133:transistor
4111:Phryctoria
4081:Photophone
4059:Smartphone
4049:Mass media
3755:Distortion
3688:Transposer
3623:Dummy load
3579:Amplifiers
3546:Modulation
3436:Colorburst
3407:Back porch
3159:Wavelength
3015:Microwaves
2827:Hard X-ray
2822:Soft X-ray
2791:Gamma rays
2723:Gamma rays
2398:2018-06-05
2280:2018-04-02
2197:2017-10-11
2074:15 October
2049:2014-11-21
1985:15 October
1898:0471743682
1845:References
1806:Globalstar
1745:smart grid
1727:smart grid
1581:Globalstar
1531:downlink (
1390:digital TV
1357:Channel 37
1293:for their
770:, such as
724:See also:
691:attenuates
663:ionosphere
613:radar band
584:including
5396:AM stereo
5255:Sirius XM
5248:providers
5167:Satellite
4866:Americas
4855:Locations
4826:Internet2
4587:Bandwidth
4291:Vint Cerf
4188:streaming
4166:Telephone
4106:Semaphore
3997:streaming
3862:Sparklies
3847:Dot crawl
3840:Artifacts
3780:Path loss
3775:Null fill
3750:Beam tilt
3491:Safe area
3173:Shortwave
3168:Microwave
2748:Microwave
2133:Npstc.org
1920:. Gannett
1784:Bluetooth
1738:Sirius XM
1515:TerreStar
1499:TerreStar
1359:used for
1273:Bluetooth
1265:ISM bands
966:Australia
794:, sleeve
707:repeaters
705:). Radio
590:Bluetooth
558:microwave
556:(SHF) or
550:decimeter
542:gigahertz
538:megahertz
528:) is the
167:UHF (ITU)
5569:Wireless
5495:Cultural
5425:Magnavox
5398:formats)
5348:SCA/SCMO
5343:RDS/RBDS
5146:HD Radio
5136:DRM/DRM+
5131:DAB/DAB+
4934:Category
4821:Internet
4811:CYCLADES
4728:Ethernet
4678:Concepts
4602:terminal
4553:wireless
4376:Bob Kahn
4219:Pioneers
4044:Internet
3935:Cable TV
3852:Ghosting
3613:Diplexer
3481:Overscan
3446:Color TV
3339:System F
3335:System E
3331:819-line
3325:System N
3321:System L
3317:System K
3313:System I
3309:System H
3305:System G
3301:System D
3297:System C
3293:System B
3289:625-line
3283:System M
3279:525-line
3274:455-line
3269:441-line
3263:System A
3259:405-line
3254:375-line
3249:343-line
3244:180-line
3183:Longwave
2943:Infrared
2743:Infrared
2363:Archived
2361:. 2017.
2005:Freeview
1947:acma.gov
1827:and its
1819:See also
1597:uplink (
1595:Skyterra
1529:Skyterra
1478:, other.
1436:ISM band
1330:MedRadio
1295:MediaFLO
1291:Qualcomm
1263:. These
1233:on both
1150:Freeview
941:Internet
939:and the
734:Retevis
720:Antennas
267:12 (THF)
262:11 (EHF)
257:10 (SHF)
114:UHF and
5321:signals
5289:AMR-WB+
5141:FMeXtra
4954:Commons
4944:Outline
4897:Oceania
4816:FidoNet
4801:ARPANET
4614:circuit
4183:digital
3912:History
3804:Testing
3386:PALplus
3236:Systems
2774:longer
2767:higher
2738:Visible
2392:The FCC
2191:the FCC
2027:4 April
1588:Iridium
1569:Galileo
1564:G1 band
1562:GLONASS
1557:L1 band
851:helical
796:dipoles
755:antenna
685:due to
667:skywave
252:9 (UHF)
245:8 (VHF)
223:4 (VLF)
218:3 (ULF)
213:2 (SLF)
208:1 (ELF)
175:C bands
120:S bands
109:E bands
5415:Harris
5410:C-QUAM
5299:HE-AAC
5276:Codecs
5260:Canada
5226:DVB-SH
5200:S band
5195:L band
5181:C band
5105:L band
4996:Analog
4892:Europe
4862:Africa
4846:Usenet
4806:BITNET
4743:Mobile
4619:packet
4128:MOSFET
4123:device
3920:Beacon
3361:NTSC-J
3076:L band
3071:S band
3066:C band
3061:X band
3047:K band
3033:Q band
3028:V band
3023:W band
2928:Orange
2923:Yellow
2903:Violet
2814:X-rays
2728:X-rays
1895:
1800:Zigbee
1794:use),
1599:Ligado
1583:uplink
1533:Ligado
1338:, and
1131:PMR446
1069:) and
1027:France
1017:L band
996:Canada
949:S band
945:L band
910:UHF CB
908:, and
906:PMR446
683:fading
621:S band
617:L band
240:7 (HF)
235:6 (MF)
230:5 (LF)
177:(NATO)
122:(IEEE)
111:(NATO)
5405:Belar
5231:S-DMB
5221:DAB-S
5126:CAM-D
5039:COFDM
5018:Radio
4875:South
4870:North
4831:JANET
4768:Telex
4758:Radio
4597:Nodes
4592:Links
4513:media
4091:Radio
4076:Pager
4004:Drums
3970:video
3965:image
3955:audio
3527:NICAM
3515:Sound
3400:Video
3391:SECAM
3381:PAL-S
3376:PAL-M
3161:types
3086:Radio
2982:Bands
2955:Bands
2918:Green
2753:Radio
2463:(ITU)
2366:(PDF)
2355:(PDF)
2327:(PDF)
2220:(PDF)
2187:(PDF)
2129:(PDF)
2022:(PDF)
1954:(PDF)
1943:(PDF)
1476:SCADA
1451:SCADA
1176:LPWAN
837:, or
792:whips
586:Wi-Fi
363:IEEE
79:to 1
60:to 3
5353:DARC
5328:AMSS
5309:DRA+
5190:band
5099:high
4998:and
4887:Asia
4773:UUCP
4733:ISDN
3790:Skew
3471:Luma
3409:and
3356:NTSC
3056:band
3042:band
3000:LWIR
2978:MWIR
2973:SWIR
2913:Cyan
2908:Blue
2374:2017
2338:2017
2307:2017
2256:2017
2231:2017
2167:2017
2141:2017
2112:2019
2104:NTIA
2076:2017
2029:2020
1987:2017
1962:2019
1926:2014
1893:ISBN
1872:2017
1864:IEEE
1704:NASA
1668:DECT
1423:Gogo
1407:Gogo
1393:36).
1320:and
1237:and
1203:DECT
1154:PMSE
947:and
931:and
918:UMTS
916:and
902:GMRS
900:are
881:and
853:and
845:and
827:Yagi
786:and
736:GMRS
630:UHF
609:IEEE
607:The
588:and
197:ITU
56:300
5338:PAD
5294:HDC
5284:AAC
5236:SDR
5216:ADR
5150:CDR
5109:UHF
5095:mid
5091:low
5087:VHF
4778:WAN
4748:NGN
4738:LAN
4019:Fax
3960:DCT
3732:VHF
3727:UHF
3371:PAL
3149:ELF
3144:SLF
3139:ULF
3134:VLF
3114:VHF
3109:UHF
3104:SHF
3099:EHF
3094:THF
3005:FIR
2951:NIR
2933:Red
2885:UVA
2880:UVB
2875:UVC
2870:NUV
2865:MUV
2860:FUV
2643:THF
2628:EHF
2613:SHF
2598:UHF
2583:VHF
2523:VLF
2508:ULF
2493:SLF
2478:ELF
2274:FCC
1776:LAN
1768:ISM
1686:AWS
1644:AWS
1555:GPS
1328:),
1299:FCC
1247:VHF
1179:IoT
1084:P25
1077:PRS
914:GSM
695:VHF
578:GPS
530:ITU
526:UHF
467:III
383:UHF
378:VHF
62:GHz
58:MHz
5555::
5097:/
5093:/
5081:HF
5077:SW
5071:MF
5067:MW
5061:LF
5057:LW
5034:FM
5029:AM
3337:,
3323:,
3319:,
3315:,
3311:,
3307:,
3303:,
3299:,
3295:,
3129:LF
3124:MF
3119:HF
2992:,
2988:,
2984::
2965:,
2961:,
2957::
2568:HF
2553:MF
2538:LF
2390:.
2357:.
2329:.
2315:^
2297:.
2272:.
2247:.
2222:.
2206:^
2189:.
2175:^
2157:.
2131:.
2102:.
2067:.
2003:.
1978:.
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