Channel 75, removed from television use in 1983, was formerly used by television stations in North America which broadcast on UHF frequencies 836-842 MHz. In the United States, channels 70-83 served primarily as a "translator band" containing repeater transmitters to fill gaps in coverage for existing stations. A handful remained in licensed operation in remote locations for years after the frequencies were lost to AMPS cellular telephony and the channels removed from tuners on new televisions, often running unattended and unmonitored.