FEC-S / FEC1000S

Simplex ARQ , ITA 3 alphabet, 7 bit, character interleaved; each block of 15 characters is inverted and repeated after 1050 msec. Two or more stations on the same frequency, transmitting mode in FEC (Forward Error Correction).

Idle: Beta in Rx and DX position. During these idle conditions, it is identical to CCIR 242 idle pattern!