[Elecraft] Surprising Behavior on KX3 KXPA100 Combo

Phil Hystad phystad at mac.com
Wed Aug 23 19:01:56 EDT 2017


My own answer to my first weird thing in message below:

Apparently, if you press/HOLD the Keyer/Mic/PWR button to display the power level, it takes another key press to revert from that action.  It was not merely the band switch that would not function but any key press had the same result — which was, that function key did not operate other than to revert the PWR display back to whatever was displayed prior to the press/HOLD on the ../PWR button.

I assume that this might be normal behavior, possibly thinking that most people would depress the same ../PWR button again to move out of that state.

ALSO, clarification on the second weird thing:

To reproduce this behavior of the power output shown one green light on the power LED display of the KXPA100, do the following:

Seems to work this way because I have two antennas, one for 80 thru 30 and the other for 20 thru 10.  So,

—> Switch antennas (either Ant 1 to 2 or Ant 2 to 1)
—> Tune using the ATU Tune button.
—> key down once (I send a dash using my paddle)
—> result is only one green LED light lit up on Power LED Display of KXPA100.
—> key down again, same thing, without needing any other button pushes and normal
      display of 100 watts is shown on KXPA100 power LED lights.

73, phil, K7PEH


> On Aug 23, 2017, at 12:32 PM, Phil Hystad <phystad at mac.com> wrote:
> 
> I have configured my KX3 with my KXPA100 (previously used only with KX2) following all instructions (I think) in the KXPA100 user manual.
> 
> First comment — everything works, antenna tuner on KXPA100 works, power out 100 watts on all bands, and so on.
> 
> Weird stuff:
> 
> 1.  I Held Keyer/Mic/PWR button for power display, showing 100 watts.  Then, I immediately pushed Band+ to switch up to next band.  No band switching too place but the display changed from 100 watts on KX3 back to the clock.  Pressing Band+ once more results in band switching as expected.  This happens every time in the sequence I describe and I am wondering if (a) this is normal, (b) something is not yet configured correctly.
> 
> 
> 2.  My reason for Hold on Keyer/Mic/PWR to display power is because after switching bands and after tuning the antenna for a low SWR (about 1.1:1) the power output was only about 10 watts.  I did a Hold on Keyer/Mic/PWR to see the power output and it was indeed 100 watts and not 10.  I then keyed down and then the output was 100 watts.  This does not seem normal to me.
> 
> None of these two behaviors occurred on my KX2.
> 
> Any ideas or comments?
> 
> 73, phil, K7PEH
> 
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