Valo Analytica

SpectrumWiki

Radio spectrum allocations

Look up a frequency or a range.

Examples: 88.5 MHz, 1350–1430 MHz, 2.4 GHz

87.5 MHz (87,500,000 Hz)

U.S. Federal Government Allocations

75.4 – 88 MHz

ITU Region 1 Allocations

87.5 – 100 MHz

BROADCASTING

5.190

ITU Region 2 Allocations

76 – 88 MHz

BROADCASTING

Fixed

Mobile

5.185

ITU Region 3 Allocations

87 – 100 MHz

FIXED

MOBILE

BROADCASTING

Footnotes

  • 5.185   Different category of service: in the United States, the French overseas departments and communities in Region 2, Guyana and Paraguay, the allocation of the frequency band 76 88 MHz to the fixed and mobile services is on a primary basis (see No. 5.33). (WRC 15)

  • 5.190   Additional allocation: in Monaco, the band 87.5-88 MHz is also allocated to the land mobile service on a primary basis, subject to agreement obtained under No. 9.21. (WRC-97)

  • NG5  In the band 535-1705 kHz, AM broadcast licensees and permittees may use their AM carrier on a secondary basis to transmit signals intended for both broadcast and non-broadcast purposes. In the band 88-108 MHz, FM broadcast licensees and permittees are permitted to use subcarriers on a secondary basis to transmit signals intended for both broadcast and non-broadcast purposes. In the bands 54-72, 76-88, 174-216, 470-608, and 614-698 MHz, TV broadcast licensees and permittees are permitted to use subcarriers on a secondary basis for both broadcast and non-broadcast purposes. Use of the band 614-698 MHz is subject to the provisions specified in NG33.

  • NG14  TV broadcast stations authorized to operate in the bands 54-72, 76-88, 174-216, 470-608, and 614-698 MHz may use a portion of the television vertical blanking interval for the transmission of telecommunications signals, on the condition that harmful interference will not be caused to the reception of primary services, and that such telecommunications services must accept any interference caused by primary services operating in these bands. Use of the band 614-698 MHz is subject to the provisions specified in NG33.

  • NG115  In the bands 54-72 MHz, 76-88 MHz, 174-216 MHz, 470-608 MHz, and 614-698 MHz, wireless microphones and wireless assist video devices may be authorized on a non-interference basis, subject to the terms and conditions set forth in 47 CFR part 74, subpart H.

  • NG149  The bands 54-72 MHz, 76-88 MHz, 174-216 MHz, 470-512 MHz, 512-608 MHz, and 614-698 MHz are also allocated to the fixed service to permit subscription television operations in accordance with 47 CFR part 73. Use of the band 614-698 MHz is subject to the provisions specified in NG33.

Wiki entries

Single Channel Ground and Airborne Radio System (SINCGARS)

Current Use 30–87.975 MHz
A longstanding Army portable and mobile system, operating across 30 - 87.975 MHz, is the Single Channel Ground and Airborne Radio System (SINCGARS). These radios provide frequency-hopping, secure voice, and data communications.

(Source: Wireless Spectrum Finder, by Bennett Z. Kobb. Wireless Spectrum Finder is now (c)MMX Technology LLC).

TV White Space Devices

Current Use 76–88 MHz Restricted to mobile/fixed white space devices that communicate with other fixed/mobile white space devices
TV white space devices are unlicensed intentional radiators that operate on available TV channels in the broadcast television frequency bands. Channel availability is determined from geospatial information and a TV bands database.

White space devices in the U.S. are governed by Part 15(H) of the FCC's rules. They operate on available TV channels in the broadcast television frequency bands, the 600 MHz band (including the guard bands and duplex gap), and in 608-614 MHz (channel 37).

TV white spaces has not been a commercial success and very few devices are in operation.

Television Broadcast

Current Use 82–88 MHz Broadcast Television (VHF)
Over-the-air television broadcasting in the United States uses the following spectrum. Each TV channel is 6 MHz wide. Digital broadcasting is by the ATSC standard. Some Low Power Television (LPTV), TV translators, and Class A television stations continue to broadcast in analog mode using the NTSC standard, but are mandated to transition to digital by September 1, 2015; however, the FCC has proposed extending this deadline in document FCC 14-151 (available under the related documents section).







VHF TV
54-72 MHz:Channels 2-4
76-88 MHz:Channels 5-6
174-216 MHz:Channels 7-13









UHF TV
470-512 MHz:Channels 14-20 (may be used for land mobile in major cities; see below)
512-608 MHz:Channels 21-36
608-614 MHz:Channel 37 (not used for TV broadcasting)
614-698 MHz:Channels 38-51

Portions of channels 14-20 (470-512 MHz) are used by the Private Land Mobile Radio Service (PLMRS) in the following metropolitan areas:














Boston MAchannels 14 & 16
Chicago ILchannels 14 & 15
Dallas/Ft. Worth TXchannel 16
Houston TXchannel 17
Los Angeles CAchannels 14, 16 & 20
Miami FLchannel 14
New York NY/NE New Jerseychannels 14-16
Philadelphia PAchannels 19 & 20
Pittsburgh PAchannels 14 & 18
San Francisco-Oakland CAchannels 16 & 17
Washington DCchannels 17 & 18

PLMRS service is allowed by the FCC's rules in Cleveland OH (14 & 15) and Detroit MI (15 & 16), but interference issues with Canada prevent PLMRS from being deployed there.

A useful characteristic of digital (ATSC) signals is the addition of a narrowband pilot tone on the RF carrier. The pilot tone is at a nominal frequency of 309.440559441 kHz above the bottom edge of the channel, although the FCC may require small frequency offsets on a station-by-station basis to avoid interference between pilot tones of co-channel TV stations. Ancillary uses of the pilot tones include, for example, monitoring for sudden enhanced propagation events, such as meteor burst or sporadic E.