70-centimeter band
The 70-centimeter amateur radio band is the 420 to 450 MHz portion of the UHF radio spectrum. This band is used by amateurs engaged in emergency communications where portable and mobile radios are frequently used. Many such radios have dual-band capabilities, operating on both the 70-centimeter and 2-meter bands. Some activity within the radio-controlled (RC) aircraft and other types of RC hobby miniature pastimes in Germany on the 70 centimeter band are also possible and permitted for German "amateurfunk" ham radio licensees, and for which a few similar 70-cm band frequencies are also available for Switzerland-licensed amateur radio licenseholders to participate in RC hobby activities as well.
Band allocation
The band's allocation varies regionally. In the United States,Australia and Trinidad and Tobago 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. By international treaty between the US and Canada, operation in the portion of the band from 420 to 430 MHz is prohibited north of Line A, which runs just south of the Canadian border from Washington state to Maine, and east of Line C, which runs from northeast to southeast Alaska.
