On 2/22/2021 2:41 PM, MIKE LAVELLE wrote:
I read that FT4, FT8, FST4, FST4W use Gaussian FSK.
Is it correct that all the other modes use unshaped keying?
Specifically, does Q65 use gaussian or unshaped keying?
Thanks,
Mike K6ML
Q65 uses continuous phase frequency-shift keying (CPFSK) without shaping
at the frequency transitions.
The advantage of shaping the frequency transitions of an M-FSK signal
decreases rapidly when M is large, as in the M=65 case for Q65.
-- 73, Joe, K1JT
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