[Elecraft] XV144 drops power if "PWR" is moved during xmit in USB mode

[KD7YZ Bob]

Howdy K3' people:

Here's another anomoly I can not figure out.

Thus by the way does NOT happen with my xv432 module.

Put xv144 in USB mode.

Use WSJT9 and put it in echo mode.
Set it to "Auto On" which simply sends a few seconds of a single-note
Tone then waits to see if something comes back from the moon.  Then
transmits again, then listens .. and so forth.

I was looking at the LED bars on the XV144 and decided to up the power.
As soon as my fingers touched the PWR knob, the XV144 ceased output,
verified on watt meter also.

WSJT9-echo-mode waited then transmitted again. No power out.

Stopping WSJT9 and restarting di not help the lack of power out of the
xv144.

However, if I held-down "XMIT" ... to Tune, then instantly the LEDS all
it up and the watt meter was happy.

So I went to the WSJT9 window and pressed to Auto-run     again. Echo
mode started with full power from the xv144 transverter.   I let it go
ten or fifteen times.

Then I touched the PW knob and began the who sequence all over ... no
power out.

So I switched Bands to 28 ... started Echo Mode and it went thru its off
and on sequences a few times.

Then I rotated the PWR knob on the K3 and the Power FROM the K3 varied as
much as I had the patience to rotate the PWR knob.

But, as I said, I could not replicate this on the XV432.

Next I set Mode to SSB and used a microphone/headset to produce speaking
and whistle-tones.

While I was pinning the meter, so to speak, which whistles, I rotated
the power knob and Voila!!! reduced or no power. Ever again .. until I
held XMIT (Tune).

Thereafter I could key the K3 and shout in the heil headset to make 25
watts out appear.

Until I rotated the knob and the xv144 transverter ceased output.

This is repeatable on the xv144.





-- 
73
KD7YZ Bob