CAS-4A (ZHUHAI-1 01) Operational 42761 2019-08-07 Draft Beacon 1 145855000 CW 0 GMSK 4800bps BJ1SK Beacon 2 145835000 CW 0 GMSK 4800bps BJ1SK Repeater 435210000 435230000 145860000 145880000 SSB 20_kHz bandwidth inverted