I will be QRV over night using JT8 mode. I will xmit when in shack and "listen only" while sleeping. 7076 USB
Andy K3UK 4. Alternative Modes for EME, Microwaves, and QRP at HF JT8 is proposed as a possible alternative to JT4. Modulation is 8-FSK at 2.857 baud. FEC uses convolutional codes with K=14, r=1/4, K=15, r=1/6, or K=16, r=1/8, depending on message length. Synchronization uses 8×8 Costas arrays at the beginning and end of a transmission, followed by two additional symbols to distinguish between 30-bit, 48-bit, and 78-bit messages. Total bandwidth is 23 Hz. At present, only the 78-bit messages have been implemented.
