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E2E05
Which of these digital modes does not support keyboard-to-keyboard operation?
Pick an answer to check it.
Answer: A. WSPR
WSPR is a beacon mode that sends only a call sign, grid, and power level, so it does not support keyboard-to-keyboard chat. RTTY, PSK31 and MFSK16 all do.
Tip: WSPR = beacons only, no chat.