Dear Gary, LF Group,
Just replace the CW carrier with the Jason multi-FSK signal - since the
signal has a constant amplitude, using a class D amplifier is not a problem.
Frequency shift keying the signal like this does generate some extended
sidebands, but these are much smaller than the ones produced by binary PSK,
so the signal has a respectable bandwidth. The only remaining problem is how
to translate the sound card audio signal up to 137kHz - hence the "phasing"
exciters that have been discussed recently.
Cheers, Jim Moritz
73 de M0BMU
----- Original Message -----
From: Gary - G4WGT <[email protected]>
To: <[email protected]>
Sent: Tuesday, February 01, 2005 6:53 PM
Subject: RE: LF: Jason DJ8WX
Hi Uwe,
I wasn't aware that you could use Jason with a class D Tx (G0MRF 300 w),
please tell me briefly how is it done?
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