[Elecraft] KX3 radio settings for WSJT-X

[David Haines]

Don:

Problem goes away when I reduce to 20W, the maximum for my dummy load.
I just put ferrites on mouse wires, keyboard wires, and sound wires and 
nothing changed.  I guess I could add more, but ... .
Maybe my best solution is to go to wireless mouse and keyboard.  I 
intentionally used wired because my cybersecurity son is against 
wireless... .

Still doesn't explain the funny noise from the KXP100, does it?

david KC1DNY

On 8/27/2020 1:20 PM, Don Wilhelm wrote:
> David,
>
> As someone else suggested, it sounds a lot like RF feedback on 17m.
> Try operating into a dummy load to see if the same thing happens - if 
> not, get out the ferrites.
>
> 73,
> Don W3FPR
>
> On 8/27/2020 12:41 PM, David Haines wrote:
>>
>> Here are more details:
>>
>> All seems to be working fine on 160m-10m except for 17m, so KX3 VFO 
>> is at 18.100 for the rest of this discussion.
>>
>> Without WSJT-X running, ATU finds a 1.1 match and TUNE button on KX3 
>> works as expected.
>>
>> With WSJT-X running, using the WSJT-X TUNE button causes the following:
>>
>> 1.  KXPA100 power LED's light from left to right _twice_, in 
>> synchronization with a musical ringing that rises in frequency, then 
>> settle down quietly to about 100W.
>>
>> 2.  Around the same time Windows reports "USB device not recognized" 
>> and the mouse cursor disappears.   At this point different things can 
>> happen:  Maybe the cursor comes back and I can stop the TUNE at 
>> WSJT-X.  Maybe it doesn't and I have to shut off the KX3 with XMIT 
>> button.  Sometimes the PC freezes and needs a hard reset.
>>
>>
>