Well-Known Radio Frequencies
CB (Citizen's Band, US and Europe)
CB radio is typically used by truckers and offroaders. It's also used in pre-FRS walkie-talkies. CB typically uses 10 kHz wide AM channels, although channels 36-40 are typically used in single sideband mode, which are allowed to transmit at up to 12 watts, while AM on CB is allowed up to 4 watts. There is some narrow-band FM activity on CB as it is legal in the US.
Read more on Wikipedia
Channels 23-25 are reserved in Europe.
- Ch 1: 26.965 MHz
- Ch 2: 26.975 MHz
- Ch 3: 26.985 MHz
- Ch 4: 27.005 MHz
- Ch 5: 27.015 MHz
- Ch 6: 27.025 MHz (colloquially "Super Bowl" channel)
- Ch 7: 27.035 MHz
- Ch 8: 27.055 MHz
- Ch 9: 27.065 MHz (emergency ONLY; this is by law)
- Ch 10: 27.075 MHz
- Ch 11: 27.085 MHz
- Ch 12: 27.105 MHz
- Ch 13: 27.115 MHz (marine & RV)
- Ch 14: 27.125 MHz
- Ch 15: 27.135 MHz
- Ch 16: 27.155 MHz
- Ch 17: 27.165 MHz (truckers traveling north/south)
- Ch 18: 27.175 MHz
- Ch 19: 27.185 MHz (truckers traveling east/west; "travelers' channel")
- Ch 20: 27.205 MHz
- Ch 21: 27.215 MHz
- Ch 22: 27.225 MHz
- Ch 23: 27.255 MHz (out of order frequency)
- Ch 24: 27.235 MHz (out of order frequency)
- Ch 25: 27.245 MHz (out of order frequency)
- Ch 26: 27.265 MHz
- Ch 27: 27.275 MHz
- Ch 28: 27.285 MHz
- Ch 29: 27.295 MHz
- Ch 30: 27.305 MHz
- Ch 31: 27.315 MHz
- Ch 32: 27.325 MHz
- Ch 33: 27.335 MHz
- Ch 34: 27.345 MHz
- Ch 35: 27.355 MHz
- Ch 36: 27.365 MHz
- Ch 37: 27.375 MHz
- Ch 38: 27.385 MHz
- Ch 39: 27.395 MHz
- Ch 40: 27.405 MHz
(TODO) Russian/Polish CB frequencies and notation (i.e. C9EF, C9EA, C9RAM)
(TODO) Japanese Citizens Band frequencies and allocations
(TODO) Some countries have additional channels. Follow this link to see them.
RCRS (Remote Control Radio Service)
There are 5 channels dedicated to remote control of model boats and aircraft.
- Ch 3a: 26.995 MHz
- Ch 7a: 27.045 MHz
- Ch 11a: 27.095 MHz
- Ch 15a: 27.145 MHz
- Ch 19a: 27.195 MHz
GMRS/FRS (US Walkie-Talkies)
GMRS and FRS are different services with different rules, but they share frequencies and use the same modulation (analog FM), so they are compatible with each other. Channels 1-7 and 15-22 are permitted to transmit at up to 2 watts on FRS and 50 watts on GMRS, and channels 8-14 are limited to 0.5 watts on both FRS and GMRS. GMRS and FRS typically both use 12.5 kHz of bandwidth, although on channels 1-7 and 15-22, GMRS radios are allowed to use up to 20 kHz. GMRS and FRS radios manufactured after September 2017 will have these channels set.
- Ch 1: 462.5625 MHz
- Ch 2: 462.5875 MHz
- Ch 3: 462.6125 MHz
- Ch 4: 462.6375 MHz
- Ch 5: 462.6625 MHz
- Ch 6: 462.6875 MHz
- Ch 7: 462.7125 MHz
- Ch 8: 467.5625 MHz
- Ch 9: 467.5875 MHz
- Ch 10: 467.6125 MHz
- Ch 11: 467.6375 MHz
- Ch 12: 467.6625 MHz
- Ch 13: 467.6875 MHz
- Ch 14: 467.7125 MHz
- Ch 15: 462.5500 MHz
- Ch 16: 462.5750 MHz
- Ch 17: 462.6000 MHz
- Ch 18: 462.6250 MHz
- Ch 19: 462.6500 MHz
- Ch 20: 462.6750 MHz
- Ch 21: 462.7000 MHz
- Ch 22: 462.7250 MHz
The following frequencies are designated as GMRS repeater input frequencies. The repeater operator will generally publish the input and output frequencies, and any CTCSS or DCS codes necessary to use it. They may be mapped to channels 23 and up on certain GMRS radios. FRS radios are not able to use these channels.
- 467.5500 MHz
- 467.5750 MHz
- 467.6000 MHz
- 467.6250 MHz
- 467.6500 MHz
- 467.6750 MHz
- 467.7000 MHz
- 467.7250 MHz
NOAA Weather Radio (US), Canada Weatheradio, SARMEX (Mexico), and Bermuda weather radio
Read more on Wikipedia
Channel designations are not clear so they have not been included. Plus, at least in the US, these channels advertise themselves at the frequency, much like commercial broadcast FM radio.
Each station in an area is assigned one of these frequencies. It can be received using analog narrow-band FM (up to 16 kHz).
- 162.400 MHz
- 162.425 MHz
- 162.450 MHz
- 162.475 MHz
- 162.500 MHz
- 162.525 MHz
- 162.550 MHz
These frequencies are less used, but they are still listed on the Wikipedia page so I'll include them here too.
- 161.650 MHz
- 161.750 MHz
- 161.775 MHz
- 162.000 MHz
- 163.275 MHz