Re: New kit: QDX - QRP Labs Digital Transceiver


On Sat, Oct 9, 2021 at 09:09 AM, Fred Spinner wrote:
Will have to think about PSK.  I think the issue without an external phase modulator would be that the resolution of the synth would not be fine enough.  In theory FSK and PSK are directly mathematically related but yeah to actually do it...
PSK using an amplitude modulator:
A low power PSK31 transmitter using a Class-E power amplifier and envelope modulation


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