Radio Frequencies

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Radio frequencies (United States)

ITU Radio Bands

Symbols Frequency Range Wavelength Range Typical sources
Extremely low frequency - ELF 3 to 30 Hz 10,000 to 100,000 km deeply-submerged submarine communication
Super low frequency - SLF 30 to 300 Hz 1000 to 10,000 km submarine communication, ac power grids
Ultra low frequency - ULF 300 to 3000 Hz 100 to 1000 km earthquakes, earth mode communication
Very low frequency - VLF 3 to 30 kHz 10 to 100 km near-surface submarine communication,
Low frequency - LF 30 to 300 kHz 1 to 10 km AM broadcasting, aircraft beacons
Medium frequency - MF 300 to 3000 kHz 100 to 1000 m AM broadcasting, aircraft beacons, amateur two-way radio
High frequency - HF 3 to 30 MHz 10 to 100 m Skywave long range radio communication: shortwave broadcasting, military, maritime, diplomatic, amateur two-way radio
Very high frequency - VHF 30 to 300 MHz 1 to 10 m FM radio broadcast, television broadcast, Professional Mobile Radio, DVB-T, MRI
Ultra high frequency - UHF 300 to 3000 MHz 10 to 100 cm PMR, television broadcast, microwave oven, GPS, mobile phone communication (GSM, UMTS, 3G, HSDPA), cordless phones (DECT), Wireless LAN, Bluetooth
Super high frequency - SHF 3 to 30 GHz 1 to 10 cm Direct-broadcast satellite, Wireless LAN, microwave relays, WiMAX, radars
Extremely high frequency - EHF 30 to 300 GHz 1 to 10 mm microwave relays, intersatellite links, WiMAX, high resolution radar, directed-energy weapon, millimeter wave scanners
Tremendously high frequency - THF 300 to 3000  GHz 0.1 to 1 mm Terahertz radiation, submillimeter radiation, low Infrared


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Personal Radio Services

Personal Radio Services

218-219 MHz Service - One or two way communications for transmission of information to subscribers within a specific service area.
Citizens Band (CB) Radio Service - 1-5 mile range two-way voice communication for use in personal and business activities.
Family Radio Service (FRS) - 1 mile range Citizen Band service for family use in their neighborhood or during group outings
General Mobile Radio Service (GMRS) - 5-25 mile range Citizen Band service for family use in their neighborhood or during group outings
Low Power Radio Service (LPRS) - private, one-way communications providing auditory assistance for persons with disability, language translation, and in educational settings, health care, law, and AMTS coast stations.
Medical Implant Communications Service (MICS) - for transmitting data in support of diagnostic or therapeutic functions associated with implanted medical devices.
Multi-Use Radio Service (MURS) - private, two-way, short-distance voice or datacommunications service for personal or business activities of the general public.
Personal Locator Beacons (PLB) - used by hikers, and people in remote locations to alert search and rescue personnel of a distress situation.
Radio Control Radio Service (R/C) - one-way non-voice radio service for on/off operation of devices at places distant from the operator.
Wireless Medical Telemetry Service (WMTS)- for remote monitoring of patients' health through radio technology and transporting the data via a radio link to a remote location, such as a nurses' station.

218-219 MHz Radio Service

Formerly known as the Interactive Video and Data Service (IVDS)

License required: Yes (ZV)
Business use permitted: Yes
Range:
Modes:
Band(s) / frequencies:
218.0-218.5 MHz (block A)
218.5-219.0 MHz (block B)

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Citizens Band (CB)

License required: None
Business use permitted: Yes
Range: 1-5 miles
Modes: Voice
Band(s) / frequencies:
40 shared channels
26.965-27.405 MHz
  • Channel 9 is for emergency use only
  • Maximum five minutes continuous use until required one minute break

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Family Radio Service (FRS)

License required: No
Business use permitted: Yes
Range: < 1 mile
Modes: Voice
Band(s) / frequencies:
462.5625-467.7125 MHz
462.5625 (Channel 1)
462.5875 (Channel 2)
462.6125 (Channel 3)
462.6375 (Channel 4)
462.6625 (Channel 5)
462.6875 (Channel 6)
462.7125 (Channel 7)
467.5625 (Channel 8)
467.5875 (Channel 9)
467.6125 (Channel 10)
467.6375 (Channel 11)
467.6625 (Channel 12)
467.6875 (Channel 13)
467.7125 (Channel 14)
Notes:
  • Maximum power of ½ watt (500 milliwatt) effective radiated power
  • Only integral (non-detachable) antennas are allowed
  • GPRS licensees may use FRS frequencies with 5 watt radios and may use detachable antennas


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General Mobile Radio Service (GMRS)

License required: Yes (ZA)
Business use permitted: No
Range:
Modes:
Band(s) / frequencies:
462-467 MHz (23 channels)
  • Mobile station or small base station operating in the simplex mode*:
(these channels are shared with channels 1-7 of the Family Radio Service)
462.5625
462.5875
462.6125
462.6375
462.6625
462.6875
462.7125
  • Base station, mobile relay station, fixed station or mobile station:
462.5500
462.5750
462.6000
462.6250
462.6500
462.6750
462.7000
462.7250
  • Mobile station, control station or fixed station in a duplex system
467.5500
467.5750
467.6000
467.6250
467.6500
467.6750
467.7000
467.7250
Notes:
  • Any mobile station or small base station in a GMRS system operating in the simplex mode may transmit voice type emissions with no more than 5 watts ERP.
  • Any mobile station in a GMRS system may transmit on the 467.675 MHz channel to communicate through a mobile relay station transmitting on the 462.675 MHz channel.

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Low Power Radio Service (LPRS)

License required: No (except for AMTS)
Business use permitted:
Range:
Modes: One-way voice, telemetry
Band(s) / frequencies:
216.75-217.0 MHz
Standard band (channels 1-40): 216.0125 -216.9875 MHz
Channel bandwidth: 25 kHz
Extra band (channels 41-60): 216.025 -216.975 MHz
Channel bandwidth: 50 kHz
Narrowband (channels 61-260): 216-0025-216.9975 MHz
Channel bandwidth: 5 kHz (authorized bandwidth: 4 kHz)
260 LPRS channels are available on a shared basis only
Certain channels (19, 20, 50, and 151-160) are reserved for law enforcement tracking purposes.
Further, AMTS-related transmissions are limited to the upper portion of the band (216.750-217.000 MHz band).
Channels must be selected in an effort to avoid interference to other LPRS transmissions.
No harmful interference may be caused to the United States Navy's SPASUR radar system (216.88-217.08 MHz) or to TV reception within the Grade B contour of any TV channel 13 station or within the 68 dBu predicted contour of any low power TV or TV translator station operating on channel 13.
Notes:
LPRS is a private, one-way short-distance communication service providing:
  • auditory assistance to persons with disabilities, persons who require language translation, and persons in educational settings
  • health care assistance to the ill
  • law enforcement tracking services in cooperation with a law enforcement agency
  • point-to-point network control communications for Automated Marine Telecommunications System (AMTS) coast stations
  • Using LPRS for Automated Marine Telecommunications System (AMTS) use requires a license
  • Two-way voice communications are prohibited.

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Medical Implant Communications Service (MICS)

License required: No (medical use by health care professionals only)
Business use permitted: Yes
Range:
Modes:
Band(s) / frequencies:
401-406 MHz


Notes:
  • The 401-406 MHz frequency band is available for MedRadio operations on a shared, secondary basis.
  • Certain MedRadio operations are permitted only in the 401-402 MHz and 405-406 MHz “wing” bands.
  • MedRadio transmitters operating in the 402-405 MHz band must incorporate a mechanism for monitoring the channel or channels that the MedRadio system devices intend to occupy and, unless there is a medical implant event, may not initiate a MedRadio communications session unless certain "access criteria" are met.

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Multi-Use Radio Service (MURS)

License required: None
Business use permitted: Yes
Range:
Modes:
Band(s) / frequencies:
151.820 MHz (11.25 KHz)
151.880 MHz (11.25 KHz)
151.940 MHz (11.25 KHz)
154.570 MHz (20.0 KHz)
154.600 MHz (20.0 KHz)
Notes:
  • Emission types A1D, A2B, A2D, A3E, F2B, F1D, F2D, F3E, G3E are allowed.
  • Emission types A3E, F3E and G3E include selective calling or tone-operated squelch tones to establish or continue voice communications.
  • MURS transmitters are prohibited from transmitting in the continuous carrier mode.
Authorized bandwidth:
  • ALL A3E emissions are limited to 8 kHz.
  • Emissions other than A3E on frequencies 151.820 MHz, 151.880 MHz, and 151.940 MHz are limited to 11.25 kHz.
  • Emissions other than A3E on frequencies 154.570 and 154.600 MHz are limited to 20.0 kHz.
  • MURS transmitters shall be designed to comply with the emission masks described in 47 CFR 95.635
  • No MURS unit, under any condition of modulation, shall exceed 2 Watts transmitter power output.

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Personal Locator Beacons (PLB)

License required: No (must register devices at NOAA Beacon Registration)
Business use permitted:
Range: Unlimited
Modes: Data
Band(s) / frequencies:
406.0-406.1 MHz
Notes:
  • In the United States the 406 MHz signal is monitored by the National Oceanic and Atmospheric Administration (NOAA) and the Air Force Rescue Coordination Center (AFRCC).
Once a signal is received, the satellites can "fix" on the signal using a Doppler Shift location method
  • When a PLB is hooked up to a GPS, the GPS coordinates can be instantly transmitted without waiting for an orbiting satellite.
  • Each PLB is equipped with a unique identifying code which is a 15 digit alpha-numeric code.
This code is transmitted in the electronic burst to the satellites and is linked to a computer database maintained by NOAA.

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Radio Control Radio Service (R/C)

License required: No
Business use permitted:
Range:
Modes: Data (see below)
Band(s) / frequencies: VHF
72.0-73.0 MHz (50 channels - model aircraft devices)
75.4-76.0 MHz (30 channels - model surface craft devices)


Notes:
Radio Control (R/C) is a one-way, short distance, non-voice radio service for on/off operation of devices at places distant from the operator. The following purposes are authorized:
  • (1) the operator turning on and/or off a device at a remote location
  • (2) an indicating device for the operator being turned on and/or off by a sensor at a remote location.
  • You cannot communicate voice or data in the R/C
  • May cause interference in the above VHF ranges or with broadcast TV reception on channels 4 or 5.
  • FCC rules also list HF channels at 26.995, 27.045, 27.095, 27.145, 27.195, and 27.255 MHz that may be used to operate any kind of device including model aircraft and surface craft devices.
  • R/C channels are not afforded any protection from interference due to the operation of fixed and mobile stations in other services assigned to the same or adjacent frequencies.

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Wireless Medical Telemetry Service (WMTS)

License required: No (equipment & location must be registered with the ASHE/AHA)
Business use permitted: Yes
Range:
Modes: All except voice and video
Band(s) / frequencies:

608-614 MHz (UHF TV channel 37; used for radio astronomy) 1395-1400 MHz (formerly a Federal Government band) 1427-1432 MHz (formerly a Federal Government band)

The third band is also used by non-medical telemetry such as utility telemetry
Notes:
  • Only authorized health care providers are eligible to operate WMTS equipment and WMTS equipment may be used only within a health care facility.

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Amateur Radio Service (HA/HV)

160 Meters (1.8-2.0 MHz)

1.800 - 2.000 MHz (CW)
1.800 - 1.810 MHz (Digital Modes)
1.810 MHz (CW QRP)
1.843-2.000 MHz (SSB, SSTV and other sideband modes)
1.910 MHz (SSB QRP)
1.995 - 2.000 MHz (Experimental)
1.999 - 2.000 MHz (Beacons)

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80 Meters (3.5-4.0 MHz)

3.590 MHz RTTY/Data DX
3.570-3.600 MHz RTTY/Data
3.790-3.800 MHz DX window
3.845 MHz SSTV
3.885 MHz AM calling frequency

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40 Meters (7.0-7.3 MHz)

7.040 MHz RTTY/Data DX
7.080-7.125 MHz RTTY/Data
7.171 MHz SSTV
7.290 MHz AM calling frequency

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30 Meters (10.1-10.15 MHz)

10.130-10.140 MHz RTTY
10.140-10.150 MHz Packet

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20 Meters (14.0-14.35 MHz)

14.070-14.095 MHz RTTY
14.095-14.0995 MHz Packet
14.100 MHz NCDXF Beacons
14.1005-14.112 MHz Packet
14.230 MHz SSTV
14.286 MHz AM calling frequency

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17 Meters (18.068-18.168 MHz)

18.100-18.105 MHz RTTY
18.105-18.110 MHz Packet

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15 Meters (21.0-21.45 MHz)

21.070-21.110 MHz RTTY/Data
21.340 MHz SSTV

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12 Meters (24.89-24.99 MHz)

24.920-24.925 MHz RTTY
24.925-24.930 MHz Packet

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10 Meters (28-29.7 MHz)

28.000-28.070 MHz CW
28.070-28.150 MHz RTTY
28.150-28.190 MHz CW
28.200-28.300 MHz Beacons
28.300-29.300 MHz Phone
28.680 MHz SSTV
29.000-29.200 MHz AM
29.300-29.510 MHz Satellite Downlinks
29.520-29.590 MHz Repeater Inputs
29.600 MHz FM Simplex
29.610-29.700 MHz Repeater Outputs

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6 Meters (50-54 MHz)

50.0-50.1 MHz CW, beacons
50.060-50.080 MHz beacon subband
50.1-50.3 MHz SSB, CW
50.10-50.125 MHz DX window
50.125 MHz SSB calling
50.3-50.6 MHz All modes
50.6-50.8 MHz Nonvoice communications
50.62 MHz Digital (packet) calling
50.8-51.0 MHz Radio remote control (20-kHz channels)
51.0-51.1 MHz Pacific DX window
51.12-51.48 MHz Repeater inputs (19 channels)
51.12-51.18 MHz Digital repeater inputs
51.5-51.6 MHz Simplex (six channels)
51.62-51.98 MHz Repeater outputs (19 channels)
51.62-51.68 MHz Digital repeater outputs
52.0-52.48 MHz Repeater inputs (except as noted; 23 channels)
52.02, 52.04 MHz FM simplex
52.2 MHz TEST PAIR (input)
52.5-52.98 MHz Repeater output (except as noted; 23 channels)
52.525 MHz Primary FM simplex
52.54 MHz Secondary FM simplex
52.7 MHz TEST PAIR (output)
53.0-53.48 MHz Repeater inputs (except as noted; 19 channels)
53.0 MHz Remote base FM simplex
53.02 MHz Simplex
53.1, 53.2, 53.3, 53.4 MHz Radio remote control
53.5-53.98 MHz Repeater outputs (except as noted; 19 channels)
53.5, 53.6, 53.7, 53.8 MHz Radio remote control
53.52, 53.9 MHz Simplex

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2 Meters (144-148 MHz)

144.00-144.05 MHz EME (CW)
144.05-144.10 MHz General CW and weak signals
144.10-144.20 MHz EME and weak-signal SSB
144.200 MHz National calling frequency
144.200-144.27 MHz 5 General SSB operation
144.275-144.300 MHz Propagation beacons
144.30-144.50 MHz New OSCAR subband
144.50-144.60 MHz Linear translator inputs
144.60-144.90 MHz FM repeater inputs
144.90-145.10 MHz Weak signal and FM simplex (145.01,03,05,07,09 are widely used for packet)
145.10-145.20 MHz Linear translator outputs
145.20-145.50 MHz FM repeater outputs
145.50-145.80 MHz Miscellaneous and experimental modes
145.80-146.00 MHz OSCAR subband
146.01-146.37 MHz Repeater inputs
146.40-146.58 MHz Simplex
146.52 MHz National Simplex Calling Frequency
146.61-146.97 MHz Repeater outputs
147.00-147.39 MHz Repeater outputs
147.42-147.57 MHz Simplex
147.60-147.99 MHz Repeater inputs


  • Notes: The frequency 146.40 MHz is used in some areas as a repeater input. This band plan has been proposed by the ARRL VHF-UHF Advisory Committee.

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1.25 Meters (222-225 MHz)

222.0-222.150 MHz Weak-signal modes
222.0-222.025 MHz EME
222.05-222.06 MHz Propagation beacons
222.1 MHz SSB & CW calling frequency
222.10-222.15 MHz Weak-signal CW & SSB
222.15-222.25 MHz Local coordinator's option; weak signal, ACSB, repeater inputs, control
222.25-223.38 MHz FM repeater inputs only
223.40-223.52 MHz FM simplex
223.52-223.64 MHz Digital, packet
223.64-223.70 MHz Links, control
223.71-223.85 MHz Local coordinator's option; FM simplex, packet, repeater outputs
223.85-224.98 MHz Repeater outputs only

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70 Centimeters (420-450 MHz)

420.00-426.00 MHz ATV repeater or simplex with 421.25 MHz video carrier control links and experimental
426.00-432.00 MHz ATV simplex with 427.250-MHz video carrier frequency
432.00-432.07 MHz EME (Earth-Moon-Earth)
432.07-432.10 MHz Weak-signal CW
432.10 MHz 70-cm calling frequency
432.10-432.30 MHz Mixed-mode and weak-signal work
432.30-432.40 MHz Propagation beacons
432.40-433.00 MHz Mixed-mode and weak-signal work
433.00-435.00 MHz Auxiliary/repeater links
435.00-438.00 MHz Satellite only (internationally)
438.00-444.00 MHz ATV repeater input with 439.250-MHz video carrier frequency and repeater links
442.00-445.00 MHz Repeater inputs and outputs (local option)
445.00-447.00 MHz Shared by auxiliary and control links, repeaters and simplex (local option)
446.00 MHz National simplex frequency
447.00-450.00 MHz Repeater inputs and outputs (local option)

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33 Centimeters (902-928 MHz)

902.0-903.0 MHz Narrow-bandwidth, weak-signal communications
902.0-902.8 MHz SSTV, FAX, ACSSB, experimental
902.1 MHz Weak-signal calling frequency
902.8-903.0 MHz Reserved for EME, CW expansion
903.1 MHz Alternate calling frequency
903.0-906.0 MHz Digital communications
906-909 MHz FM repeater inputs
909-915 MHz ATV
915-918 MHz Digital communications
918-921 MHz FM repeater outputs
921-927 MHz ATV
927-928 MHz FM simplex and links

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23 Centimeters (1240-1300 MHz)

1240-1246 MHz ATV #1
1246-1248 MHz Narrow-bandwidth FM point-to-point links and digital, duplex with 1258-1260.
1248-1258 MHz Digital Communications
1252-1258 MHz ATV #2
1258-1260 MHz Narrow-bandwidth FM point-to-point links digital, duplexed with 1246-1252
1260-1270 MHz Satellite uplinks, reference WARC '79
1260-1270 MHz Wide-bandwidth experimental, simplex ATV
1270-1276 MHz Repeater inputs, FM and linear, paired with 1282-1288, 239 pairs every 25 kHz, e.g. 1270.025, .050, etc.
1271-1283 MHz Non-coordinated test pair
1276-1282 MHz ATV #3
1282-1288 MHz Repeater outputs, paired with 1270-1276
1288-1294 MHz Wide-bandwidth experimental, simplex ATV
1294-1295 MHz Narrow-bandwidth FM simplex services, 25-kHz channels
1294.5 MHz National FM simplex calling frequency
1295-1297 MHz Narrow bandwidth weak-signal communications (no FM)
1295.0-1295.8 MHz SSTV, FAX, ACSSB, experimental
1295.8-1296.0 MHz Reserved for EME, CW expansion
1296.00-1296.05 MHz EME-exclusive
1296.07-1296.08 MHz CW beacons
1296.1 MHz CW, SSB calling frequency
1296.4-1296.6 MHz Crossband linear translator input
1296.6-1296.8 MHz Crossband linear translator output
1296.8-1297.0 MHz Experimental beacons (exclusive)
1297-1300 MHz Digital Communications

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2300-2310 and 2390-2450 MHz

2300.0-2303.0 MHz High-rate data
2303.0-2303.5 MHz Packet
2303.5-2303.8 MHz TTY packet
2303.9-2303.9 MHz Packet, TTY, CW, EME
2303.9-2304.1 MHz CW, EME
2304.1 MHz Calling frequency
2304.1-2304.2 MHz CW, EME, SSB
2304.2-2304.3 MHz SSB, SSTV, FAX, Packet AM, Amtor
2304.30-2304.32 MHz Propagation beacon network
2304.32-2304.40 MHz General propagation beacons
2304.4-2304.5 MHz SSB, SSTV, ACSSB, FAX, Packet AM, Amtor experimental
2304.5-2304.7 MHz Crossband linear translator input
2304.7-2304.9 MHz Crossband linear translator output
2304.9-2305.0 MHz Experimental beacons
2305.0-2305.2 MHz FM simplex (25 kHz spacing)
2305.20 MHz FM simplex calling frequency
2305.2-2306.0 MHz FM simplex (25 kHz spacing)
2306.0-2309.0 MHz FM Repeaters (25 kHz) input
2309.0-2310.0 MHz Control and auxiliary links
2390.0-2396.0 MHz Fast-scan TV
2396.0-2399.0 MHz High-rate data
2399.0-2399.5 MHz Packet
2399.5-2400.0 MHz Control and auxiliary links
2400.0-2403.0 MHz Satellite
2403.0-2408.0 MHz Satellite high-rate data
2408.0-2410.0 MHz Satellite
2410.0-2413.0 MHz FM repeaters (25 kHz) output
2413.0-2418.0 MHz High-rate data
2418.0-2430.0 MHz Fast-scan TV
2430.0-2433.0 MHz Satellite
2433.0-2438.0 MHz Satellite high-rate data
2438.0-2450.0 MHz WB FM, FSTV, FMTV, SS experimental


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Other amateur bands and frequencies

3300-3500 MHz

3456.3-3456.4 MHz Propagation beacons


5650-5925 MHz

5760.3-5760.4 MHz Propagation beacons


10.00-10.50 GHz

10.368 GHz Narrow band calling frequency
10.3683-10.3684 GHz Propagation beacons
10.3640 GHz Calling frequency


Above 10.50 GHz

All modes and licensees (except Novices) are authorized on the following bands:

  • US amateurs must check Sections 97.301, 97.303, 97.305 and 97.307 for sharing requirements before operating.


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Other radio services

Aircraft Stations (AC)

  • The vast majority of aircraft radios that have been type accepted under the 30 ppm frequency tolerance utilize 25 kHz spacing and have 720 or 760 channels
  • Emergency and Distress
The frequency 121.5 MHz is the international simplex channel for use by aircraft in distress or emergency. It is assigned only in combination with other operational frequencies. The frequency 243 MHz is available to survival craft stations and emergency locator transmitters which are also equipped to transmit on 121.5 MHz.


  • International Operations
Stations aboard aircraft flying outside U.S. territory may communicate with foreign ground stations using frequencies that are not specified on their FCC station license. Aircraft radio operators on international flights should be aware of the requirements of foreign administrations.
  • Restricted Radiotelephone Operator Permit
At least one person on each aircraft flying or communicating internationally must have a Restricted Radiotelephone Operator Permit. This requirement is in addition to the requirement to have an aircraft radio station license for the aircraft. No Restricted Radiotelephone Operator Permit is required to operate VHF radio equipment on board an aircraft when that aircraft is flown domestically.

Aviation frequencies

9 to 535 kHz (Aeronautical, aircraft, survival craft, radio navigation)
Survival craft stations on 500 kHz
1605 to 4000 kHz (Aeronautical fixed, aeronautical, aircraft, survival craft)
Survival craft stations on 2182 kHz
4 to 29.7 MHz (Aeronautical fixed, single-sideband & independent-sideband emission, class F1B emission, aeronautical, aircraft, survival craft)
Survival craft stations on 8364 kHz
29.7 to 100 MHz (Aeronautical fixed, operational fixed, radionavigation)
Operational fixed stations
  • 73–74.6 MHz (Power 50 W or less)
  • 73–74.6 MHz (Power above 50 W)
  • 72–73.0 MHz and 75.4–76.0 MHz
108 to 137 MHz (Aeronautical, ELT, aircraft, radionavigation, differential GPS)
Survival craft stations on 121.5 MHz
137 to 470MHz (Aeronautical, survival craft, aircraft, radio navigation, emergency locator transmitters)
Survival craft stations on 243 MHz
Emergency locator transmitters on 406 MHz
470 to 2450 MHz (Aeronautical, aircraft, aircraft earth, radionavigation)
2450 to 10500 MHz (Radionavigation)
10.5 GHz to 40 GHz (Radionavigation)

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Marine stations

VHF: 156 - 174 MHz

a) During its hours of operation, each coast station operating in the 156–162 MHz band and serving rivers, bays and inland lakes except the Great Lakes, must maintain a safety watch on the frequency 156.800 MHz except when transmitting on 156.800 MHz.

Marine frequencies


Marine channel usage

  • DISTRESS SAFETY AND CALLING: 16
  • INTERSHIP SAFETY: 6
  • COAST GUARD LIAISON: 22 (after contact on 16)
  • NONCOMMERCIAL: 9, 67, 68, 69, 71, 72, 78, 79, 80 (67 & 72 required for ship-ship)
  • COMMERCIAL: 1, 7, 8, 9, 10, 11, 18, 19, 63, 67, 79, 80, 88A (8, 67, 72, 88A required for ship-ship)
  • PUBLIC CORRESPONDENCE (MARINE OPERATOR): 24, 25, 26, 27, 28, 84, 85, 86
  • PORT OPERATIONS: 1, 5,12, 14, 20, 63, 65, 66, 73, 74, 75, 76, 77 (ship-coast must use 20; 77 only for internship comms between pilots)
  • NAVIGATIONAL: 13, 67 (bridge-to-bridge; power not greater than 1 watt)
  • MARITIME CONTROL: 17
  • DIGITAL SELECTIVE CALLING: 70
  • WEATHER: Wx-1 162.55, Wx-2 162.4, Wx-3 162.475 (receive only; NOAA weather reports)
Channel 1: available only in the New Orleans area
Channel 5: available only in the Houston and New Orleans areas
Channel 9: allowed for internship, ship, and coast general purpose calling by noncommercial ships
Channel 63: available only in the New Orleans area
Channel 67: available only in Puget Sound and the Strait of Juan de Fuca, and for navigational comms only in the Mississippi and Gulf outlet area
Channel 71: available in Puget Sound VTS protection area for port operations; NTE 1 watt
Channel 75: available for navigation-related port operations or ship movement only; NTE 1 watt
Channel 76: available for navigation-related port operations or ship movement only; NTE 1 watt
Channel 79: available only in the Great Lakes
Channel 80: available only in the Great Lakes
Channel 88A: available only in the New Orleans area

Marine VHF channels & frequencies

Emergency channel: 2182 kHz

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Air-Ground Radiotelephone Service (CA/CG/CJ)

Commercial Aviation Air-Ground Stations:

849.0-850.5 / 894.0-895.5
850.5-851.0 / 895.5-896.0

General Aviation Air-Ground Stations:

454.675-454.975 / 459.675-459.975
  • Commercial aviation air-ground radiotelephone service licensees operate in the 800 MHz band and can provide communication services to all aviation markets, including commercial, governmental, and private aircraft. Services include, but are not limited to, voice telephony, broadband internet access, and data. However, fixed services and ancillary land mobile services are not permitted.
  • General aviation air-ground radiotelephone service licensees operate in the 450 MHz band and can provide a variety of telecommunications services to private aircraft such as small single engine planes and corporate jets.
  • Federal Aviation Administration (FAA) and aircraft operator rules and policies restrict the use of personal electronic devices (PEDs) on aircraft. The use of PEDs, which include wireless telephones, pagers, personal digital assistants, portable music players, video games and laptop computers, remains subject to FAA and aircraft operator authority over inflight safety.


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Global Positioning System (GPS)

L1 (1575.42 MHz): Coarse-acquisition (C/A) and encrypted precision P(Y) codes, plus the L1 civilian (L1C) and military (M) codes on future Block III satellites.

L2 (1227.60 MHz): P(Y) code, plus the L2C and military codes on the Block IIR-M and newer satellites. L3 (1381.05 MHz): Used for nuclear detonation (NUDET) detection. L4 (1379.913 MHz): Being studied for additional ionospheric correction. L5 (1176.45 MHz): Proposed for use as a civilian safety-of-life (SoL) signal.


Wide Area Augmentation System (WAAS)

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Other geodetic positioning systems

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Basic Exchange Telephone Radio Service (BETRS)

Band(s)

152-159 MHz
454-460 MHz
816-820/861-865 MHz

Blocks

94

Block Size

40 kHz (paired)

(Table of Contents)

Dedicated Short Range Communications (DSRC)

Band(s)

5.850-5.925 GHz

Block Size

10 MHz channels (some of which can be aggregated to 20 MHz)

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Broadband Radio Service (BRS) & Educational Broadband Service (EBS)

formerly known as the Multipoint Distribution Service (MDS)/Multichannel Multipoint Distribution Service (MMDS) and the Instructional Television Fixed Service (ITFS)

2496-2690 MHz

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Industrial/Business

25-50 MHz (20 kHz channels; HF-VHF low band)
72-76 MHz (20 kHz channels; VHF low band; between TV channels 4 & 5)
150-174 MHz (7.5 kHz channels; VHF high band; 6, 11.25, or 20 kHz authorized bandwidth)
216-220 MHz (6.25 kHz channels; VHF high band; may be combined up to 50 kHz)
406-413 MHz (UHF band)
Available channels for hydrological or meteorological data transmission:
  • 406.125 MHz
  • 406.175 MHz
  • 409.675 MHz
  • 409.725 MHz
  • 412.625 MHz
  • 412.675 MHz
  • 412.725 MHz
  • 412.775 MHz
421-430 MHz (6.25 kHz channels; Detroit, Buffalo, and Cleveland only; 6 kHz bandwidth)
450-470 MHz (6.25 kHz channels; 6 kHz bandwidth)
470-512 MHz (6.25 kHz channels; shared with UHF TV - only available in 11 cities; 6 kHz bandwidth)
800 MHz (25 or 12.5 kHz channels; UHF; 20 kHz bandwidth)
900 MHz (12.5 kHz channels; UHF; 13.6 kHz bandwidth)
1427-1432 MHz (12.5 kHz channels; UHF; 12.5 bandwidth; may be combined up to 50 kHz)

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Local Television Transmission Service (LTTS)

2 GHz, 4 GHz, 6 GHz, 11 GHz, 13 GHz, 14 GHz, 21 GHz

Broadcast Auxiliary

UHF
VHF
900 MHz
2 GHz
7 GHz
13 GHz
18 GHz

(Table of Contents)

Fixed Microwave Services

930 MHz, 940 MHz, 950 MHz, 2 GHz, 4 GHz, 6 GHz, 10 GHz, 11 GHz, 12 GHz, 18 GHz, 23 GHz, 31 GHz, 38 GHz, 70 GHz, 80 GHz, 90 GHz

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Local Multipoint Distribution Service

“A” block:
  • 27.5 – 28.35 GHz
  • 29.1 – 29.25 GHz
  • 31.075 – 31.225 GHz
“B” block:
  • 31.0 – 31.075 GHz
  • 31.225 GHz – 31.3 GHz

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Private Land Mobile Paging

929.0375 MHz
929.0625 MHz
929.0875 MHz
929.1625 MHz
929.2625 MHz

(Table of Contents)

Offshore Radiotelephone Service

duplex analog telephone service for Gulf of Mexico oil platforms

488-490/491-493 MHz
485-487/482-484 MHz
476-478/479-481 MHz
  • 235 40 kHz (paired) channels

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Paging

35-36 MHz (CA-CP unpaired)
43-44 MHz (DA-DP unpaired)
152-159 MHz (EA-ED unpaired; FA-FR paired)
454-460 MHz (GA-GZ paired; GN-GV overlap with FJ-FR)
929 MHz (A-L unpaired)
931 MHz (AA-BK unpaired)
  • 129 channels (20 kHz unpaired or 40 kHz paired)

(Table of Contents)

Rural Radiotelephone Service

152-159 MHz
454-460 MHz
  • 44 40 kHz (paired) channels

(Table of Contents)

AM Radio

Longwave AM Radio = 148.5 – 283.5 kHz (LF)
Mediumwave AM Radio = 530 kHz – 1710 kHz (MF)
Shortwave AM Radio = 3 MHz – 30 MHz (HF)


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FM Radio

  • All countries use FM channel center frequencies ending in 0.1, 0.3, 0.5, 0.7, and 0.9 megahertz (MHz)
  • Some countries also use center frequencies ending in 0.0, 0.2, 0.4, 0.6, and 0.8 MHz
  • A few others also use 0.05, 0.15, 0.25, 0.35, 0.45, 0.55, 0.65, 0.75, 0.85, and 0.95 MHz
  • United States: 88.0 to 108.0 megahertz (MHz).
  • Japan: 76.0 to 90 MHz
  • Eastern Europe (OIRT band): 65.8 to 74.0 MHz (a number of these countries have added the 88 to 108 MHz band and are using the two FM bands simultaneously, as in the case of Russia.) Some other countries have discontinued the use of the OIRT band.


  • ITU Region 2 (North America) uses 101 FM channels, numbered from 200 (center frequency 87.9 MHz) to 300 (center frequency 107.9 MHz)
    • The center frequencies of the FM channels are spaced in increments of 200 kHz.
    • The frequency of 87.9 MHz, while technically part of TV channel six (82.0 to 88.0 MHz), is used by just two FM class-D stations in the United States.
    • The twenty channels with center frequencies of 88.1–91.9 MHz (channels 201 through 220) constitute the reserved band, exclusively for non-commercial educational (NCE) stations. (US only)



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Specialized Mobile Radio Service

Band(s)

809 MHz - 816 MHz & 854 MHz - 861 MHz
  • (30 general category channels and 80 SMR channels interleaved with 170 B/ILT/Public Safety channels)
816 MHz - 824 MHz & 861 MHz - 869 MHz
896 MHz - 901 MHz & 935 MHz - 940 MHz (200 SMR channels interleaved with 199 B/ILT channels)

Blocks

A-C, G-V (800 MHz band)
A-T (900 MHz band)


Block Size

A 1 MHz (20 channel pair)
B 2.5 MHz (60 channel pair)
C 6 MHz (120 channel pair)
G-V 250 KHz (5 channel pair)
A-T 250 KHz (10 channel pair)

Channels

540 channels in the 800 MHz band
200 channels in the 900 MHz band

(Table of Contents)

Wireless Communications Service (WCS)

Band(s)

2305-2320 MHz
2345-2360 MHz

Blocks A-D (block size: 5 and 10 MHz)

(Table of Contents)

Unlicensed Personal Communications Services (UPCS)

1920-1930 MHz
  • Digital Enhanced Cordless Telecommunications (DECT)

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Industrial, Scientific and Medical (ISM) Unlicensed

6.765 - 6.795 MHz
13.553 -13.567 MHz
26.957 - 27.283 MHz
40.660 - 40.700 MHz
433.050 - 434.790 MHz
902.000 - 928.000 MHz
2.400 - 2.500 GHz
5.725 - 5.875 GHz
24.000 - 24.250 GHz
61.000 - 61.500 GHz
122.000 - 123.000 GHz
244.000 - 246.000 GHz
  • Bluetooth 2450 MHz band
  • HIPERLAN 5800 MHz band
  • IEEE 802.11/WiFi 2450 MHz and 5800 MHz bands
  • IEEE 802.15.4, ZigBee and other personal area networks may use the 915 MHz and 2450 MHz ISM bands.
  • Microwave ovens: 2.45 GHz
  • Wireless sensor networks: 868 MHz, 915 MHz and 2.450 GHz bands
  • Radio-frequency identification (RFID): 13.56 MHz (ISO/IEC 14443 devices such as passports and smart cards)

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Distress Frequencies

  • 2182 kHz forms an essential part of the Global Maritime Distress Safety System (GMDSS). It has an associated DSC frequency at 2187.5 kHz.
  • 121.5 MHz as the civil, and 243 MHz as the military aircraft emergency frequencies
  • Marine VHF radio channel 16, (156.8 MHz) for short range maritime use
  • 406.025 MHz used by the Cospas-Sarsat international satellite-based search and rescue (SAR) distress alert detection and information distribution system
  • The U.S. Coast Guard only monitors distress alert signals broadcast using digital 406 MHz emergency position indicating radio beacons as of 1 Feb. 2009.
  • Satellite processing from all 121.5 or 243 MHz locators was discontinued.

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Weather Frequencies (US, Canada, Bermuda)

Frequency Name
162.4 MHz WX 1 (Old name: WX 2)
162.425 MHz WX 2 (Old name: WX 4)
162.45 MHz WX 3 (Old name: WX 5)
162.475 MHz WX 4 (Old name: WX 3)
162.5 MHz WX 5 (Old name: WX 6)
162.525 MHz WX 6 (Old name: WX 7)
162.55 MHz WX 7 (Old name: WX 1)

[1]

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Other lists of frequencies


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  1. ↑ http://en.wikipedia.org/wiki/Weatheradio
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