Bob,
While your decode level is admirable, using the SLUSB VOX to trigger the
PTT is less than reliable. You will be FAR better off using a CAT
command (or RTS/DTS) for PTT.
However on my K3, I do set the tx volume to max on the sound card
driver, the TX knob to noon, THEN adjust the ALC to 4 bars lit and the
5th flickering.
Please note that if you change the pitch of the audio tone, you'll want
to reset the ALC as there is a vast difference from 600 Hz output to
2KHz output.
You can also use the DATA A mode for decoding, simplifying your setup
(all data modes in one group).
One experiment I'm planning is using a second audio card in the desktop,
to see if that improves low level decoding.
73,
Rick nhc
On 4/10/2016 5:17 PM, Robert Nobis wrote:
George,
Not sure how to set up VOX using an internal sound card. For use with my
SignaLink USB, I simply adjusted the output level of the sound card until it
properly keyed the transmitter.
Also Chapter 6 in the Elect KX-3 manual covers VOX setup. See page 66.
I am also using USB rather than Data mode for decode with WSJT-X v1.7.0 dev. I
have been able to consistently get decodes down as low as -26 to -27dB.
73,
Bob Nobis - N7RJN
[email protected]
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