Modes

Satellite Modes Historically OSCAR uplink (transmit to) and downlink (receive from) frequencies were designated using single letter codes. Mode A: 2 m uplink / 10 m downlink Mode B: 70 cm uplink / 2 m downlink Mode J: 2 m uplink / 70 cm downlink New uplink and downlink designations use sets of paired letters following the structure X/Y where X is the uplink band and Y is … Continue reading