70 centimeters

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70 centimeters is a common amateur radio (ham) band in the UHF spectrum. The exact amateur frequency allocations varies regionally. In the US and Australia the band ranges from 420 to 450 MHz with some geographical limitations; in Canada, the band is only 430 - 450 MHz; in the UK, amateurs are allocated 430 - 440 MHz.

This band is popular with amateurs engaged in emergency communications where portable and mobile radios are frequently used. Often, hams have dual-band radios, capable of operation on both 70 centimeters and 2 meters.

Below is the ARRL US band plan for the 70 cm band:


420.00 - 426.00 MHz Amateur TV repeater or simplex, and experimental
426.00 - 432.00 MHz Amateur TV simplex
432.00 - 432.07 MHz CW EME (Moonbounce)
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
432.30 - 432.40 MHz Propagation beacons
432.40 - 433.00 MHz Mixed-mode and weak-signal
433.00 - 435.00 MHz Auxiliary/repeater links
435.00 - 438.00 MHz Satellite only (internationally)
438.00 - 444.00 MHz ATV repeater input 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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Very high frequency (VHF) and Ultra high frequency (UHF) Amateur radio bands
VHF UHF
6 m 4 m 2 m 1.25 m 70 cm 33 cm 23 cm 13 cm
50 MHz 70 MHz 144 MHz 219-220 MHz 420 MHz 902 MHz 1.24 GHz 2.3-2.31 GHz
54 MHz 70.5 MHz 148 MHz 222-225 MHz 450 MHz 928 MHz 1.3 GHz 2.39-2.45 GHz


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