AMSAT Fox-1 Satellites Uplink FM (67 Hz CTCSS) Downlink FM Comments AO-91 (RadFxSat / Fox-1B) 435.250 MHz 145.960 MHz Operational – Due to battery status, please do not attempt to access while in eclipse. AO-92 (Fox-1D) 435.350 MHz 145.880 MHz Has re-entered the atmosphere. SO-50 (SaudiSat-1C) Uplink FM (67 Hz CTCSS) Downlink FM Comments … Continue reading FM Satellite Frequency Summary