On 06/08/2013 23:44, Joe Taylor wrote:
Hi all,
Hi Joe,
Here's another idea related to Tx Audio.
When operating in "Split Tx" more we now adjust the nominal frequency
of the generated audio signal (actually the frequency of the sync
tone) so that it falls in the range 1000 - 2000 Hz. The transceiver
Tx dial frequency is offset in 1000 Hz steps to accommodate the
adjustment.
I think it would be better to limit the generated audio to an even
smaller range, say 1500 - 2000 Hz. Harmonics of the generated audio
would then fall outside the transceiver's Tx filter. Signals would be
much cleaner in cases where the user has set the Tx audio level too high.
Comments?
No a bad idea. The last couple of times I've listened on 20m there have
been some filthy signals and the biggest problem seems to be AF
overdrive rather than RF overdrive.
Also the CW generator is very harsh, I was going to have a go at
softening the keying some time after these QAudio changes go in.
-- Joe, K1JT
73
Bill
G4WJS.
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