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Common VHF Frequencies

In the US the civil aircraft communications band (118-137 MHz) generally uses 25 kHz spaced channels.

As of 2010 aeronautical enroute and flight test stations may use 8.33 kHz spaced channels in the 121.4-123.6, 128.825-132.0 and 136.5-136.875 MHz ranges.

Frequency  Type  Tone  Alpha Tag  Description  Mode  Tag 
121.50000  BM    VHF Guard Aircraft Emergency and Distress (VHF Guard)  AM  Aircraft 
121.95000  BM    AvSup 121.95 Aviation Support  AM  Business 
122.75000    FixedAir-Air Fixed wing aircraft air-to-air  AM  Aircraft 
122.77500  BM    AvSup122.775 Aviation Support  AM  Business 
122.85000  BM    Multi 122.85 Multicom, Aviation Support  AM  Aircraft 
122.90000  BM    Multi 122.9 Multicom, Search and Rescue Training  AM  Aircraft 
122.92500  BM    Multi122.925 Multicom - Special Use, Natural resource management  AM  Aircraft 
123.02500    Heli Air-Air Helicopter Air-to-Air  AM  Aircraft 
123.10000  BM    SAR Primary Search and Rescue primary, ATC for special events secondary  AM  Aircraft 
123.12500  BM    FltTst123.12 Flight Test itinerant  AM  Business 
123.15000  BM    FltTst123.15 Flight Test itinerant  AM  Business 
123.17500  BM    FltTst123.17 Flight Test itinerant  AM  Business 
123.20000  BM    FltTest123.2 Flight Test  AM  Business 
123.22500  BM    FltTst123.22 Flight Test  AM  Business 
123.25000  BM    FltTst123.25 Flight Test  AM  Business 
123.27500  BM    FltTst123.27 Flight Test  AM  Business 
123.30000  BM    AvSup 123.3 Aviation Support  AM  Business 
123.32500  BM    FltTst123.32 Flight Test  AM  Business 
123.35000  BM    FltTst123.35 Flight Test  AM  Business 
123.37500  BM    FltTst123.37 Flight Test  AM  Business 
123.40000  BM    FltTest123.4 Flight Test itinerant  AM  Business 
123.42500  BM    FltTst123.42 Flight Test itinerant  AM  Business 
123.45000  BM    FltTst123.45 Flight Test/Unofficial Air-to-Air  AM  Business 
123.47500  BM    FltTst123.47 Flight Test  AM  Business 
123.50000  BM    AvSup 123.5 Aviation Support  AM  Business 
123.52500  BM    FltTst123.52 Flight Test  AM  Business 
123.55000  BM    FltTst123.55 Flight Test  AM  Business 
123.57500  BM    FltTst123.57 Flight Test  AM  Business 
126.20000  BM    MilCom 126.2 Military Common (advisory)  AM  Aircraft 
134.10000  BM    MilCom 134.1 Military Common (advisory)  AM  Aircraft 
135.85000  BM    FltIns135.85 FAA Flight Inspection  AM  Federal 
135.95000  BM    FltIns135.95 FAA Flight Inspection  AM  Federal 
122.00000  BM    FltWatchWx Flight Watch Weather  AM  Aircraft 
129.52500  CSQ  DeicingComm Deicing Common  AM  Business 
121.77500  CSQ  ELT Training Emergency Locator Transmitter (ELT) Training Beacons  AM  Aircraft 

From Appendix 2 of FAA Spectrum Management Regulations and Procedures Manual and 87.173 Aeronautical Frequency Table (See references below)

118.000 - 121.400  Air Traffic Control
121.425 - 121.450  Govt AWOS/ASOS
121.475 - 121.525  Band Protection for 121.5
121.550 - 121.575  Govt AWOS/ASOS
121.600 - 121.925  Air Traffic Control (Old gnd ctrl freq band)
121.775            SAR ELT Location training
121.975            FSS Private Aircraft Advisory
122.000 - 122.050  En Route Flight Advisory Service (EFAS)
122.075 - 122.675  FSS Private Aircraft Advisory
122.700 - 122.725  Unicom - Uncontrolled Airports
122.800            Unicom - Uncontrolled Airports
122.825            Domestic VHF
122.875            Unicom, Domestic VHF
122.950            Unicom - Airports with full time ATCT or FSS
122.975 - 123.000  Unicom - Uncontrolled Airports
123.050 - 123.075  Unicom - Uncontrolled Airports
123.125 - 123.175  Flight Test itinerant
123.200 - 123.275  Flight Test
123.325 - 123.375  Flight Test
123.425 - 123.475  Flight Test
123.525 - 123.575  Flight Test
123.600 - 126.800  Air Traffic Control
128.825 - 132.000  Operational Control
132.025 - 136.475  Air Traffic Control
136.500 - 136.875  Domestic VHF
136.900 - 136.975  International and Domestic VHF

Common UHF Frequencies

In recent years many PMSV stations have moved off of the four older nationwide common frequencies.

243.0  Aircraft Emergency and Distress (UHF Guard)
257.8  Air Traffic Control (Military Common)
282.8  Search and Rescue
255.4  FAA Flight Service Stations
296.7  FAA Flight Service Stations
239.8  PMSV (Pilot to Metro Service - weather advisory)
342.5  PMSV
344.6  PMSV
375.2  PMSV
303.0  Air-to-air "Winchester"
311.0  USAF ACC Command Posts Pimary
321.0  USAF ACC Command Posts Secondary
381.3  USAF ACC Command Posts
319.4  USAF AMC Command Posts  
349.4  USAF AMC Command Posts
252.1  USAF Reserve Command Posts
351.2  USAF Reserve Command Posts
364.2  USAF NORAD AICC Primary
380.0  FAA Flight Inspection/ SMO Ground Personnel
380.1  FAA Flight Inspection/ SMO Ground Personnel

ARINC En Route Service

The ARINC En Route Service is available to aircraft above 20,000 feet and on the ground at select airports. Base is "San Francisco Radio" except on Gulf Net, Maritime Net and Mex Net which are "New York Radio."

VHF en route frequencies changed effective 04 Apr 2012:

128.900  Southwest USA
129.400  Northeast USA / Canada West Coast and Anchorage
129.450  East Central USA
131.800  Northwest USA
129.900  Maritime Net (Northeast Coast USA)
130.700  Mexico / Carribean
131.175  Southeast USA
130.400  West Central USA
131.950  Pacific Net (West Coast USA and Hawaii)

Aircraft Communications Addressing and Reporting System (ACARS)

ACARS data is used to send messages to and from commercial airlines' aircraft.

Frequency  Type  Alpha Tag  Description  Mode  Tag 
129.12500  BM  ACARS129.125 United States  Telm  Data 
130.02500  BM  ACARS130.025 United States  Telm  Data 
131.12500  BM  ACARS131.125 United States (High Traffic Areas)  Telm  Data 
131.55000  BM  ACARS 131.55 United States  Telm  Data 
130.45000  BM  ACARS 130.45 United States (High Traffic Areas)  Telm  Data 
136.80000  BM  ACARS 136.8 United States  Telm  Data 
136.85000  BM  ACARS 136.85 United States  Telm  Data 
136.75000  BM  ACARS 136.75 United States  Telm  Data 

Balloon Operations

123.3 Common air-to-ground (pilot-to-chase crew), shared with glider ops.
123.5 Common air-to-ground (pilot-to-chase crew), shared with glider ops.
122.75 Common air-to-air
122.0 AFSS Weather requests


Heavy Lift Helicopters

Other Aircraft Frequencies


Marker Beacon

75.000 MHz

Non-Directional Beacon (NDB)

190 - 530 kHz
1600 - 1800 kHz

Federal Aviation Administration

Air Route Traffic Control Centers (ARTCC)

Each Center is indexed at the ARTCC article.


MWARA Major World Air Route Areas support HF Radio communications to aircraft outside of VHF range.

Finding Air Traffic Frequencies

Finding Air Traffic Frequencies

Related Links




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