Jim,
What are the settings for the K3S CODEC in the computer?
Look at your soundcard settings and set them to something lower. There
is normally no need for an additional control in the K3S other than the
normal LINE IN gain settings. The settings for the K3/K3S computer LINE
OUT (or SPKR) should be about 50%. but lower is K too. The K3/K3S
should be set to some mid-range value. If very low or very high, adjust
the computer soundcard settings until it adjusts in the K3/K3S midrange.
Same goes for LINE OUT - the soundcard LINE IN should be set to about
50% in the computer, set K3/K3S LINE OUT to some value near 8 or 10.
For soundcard data modes, you need to adjust the audio drive level for 4
bars solid on the ALC mater with the 5th bar flashing - that is the NO
ALC point for the K3/K3S. Adjust the power level with the POWER knob.
To do it like the JT instructions tell you will lead to power "hunting"
which will include power overshoot.
Ignore the JT instructions and the common internet advice which is to
set the power to full and adjust the power with the audio level. That
is for other transceivers. The Elecraft transceivers control power
differently than all other amateur transceivers that I know of. Some
commercial gear does work like the K3/K3S with a closed loop power
control system.
73,
Don W3FPR
On 6/26/2017 8:59 PM, Jim Rogers wrote:
Richard - I second your report, there is no fine adjustment for the USB
audio on the K3s either in received audio or transmitted audio. When the
band is noisy, I have to reduce LIN OUT to 01 or alternatively reduce
the overall system gain with the RF gain (which in the case of the K3
and K3s is IF gain).
When operating meteor scatter on 2M with an Elecraft K144XV transverter
I had to reduce the audio drive from the JT65 software to 50% to prevent
RF power out overshoot and hunting, typical in over-driven closed loop
systems. This allowed me to advance LIN IN and the end result was the
power detection system of the K3s settled down.
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