[Elecraft] KX2 TX "Sticks On" in FT8?

[Don Wilhelm]

Bret,

That sounds like noise, hum or buzz is getting into the audio cable 
between your soundcard and the KX2.  Try to find a metal connection on 
you soundcard and run a heavy guage wire between that point and the 
chassis of the KX2.  Run another between the soundcard and the computer. 
  Often that bonding will help by routing the noise along the bonding 
wire instead of the shield of the audio cable.

Also check for the possibility of RF feedback - if it works OK with a 
dummy load, the apply RF common mode chokes to the coax.

73,
Don W3FPR

On 8/9/2019 7:32 AM, MaverickNH wrote:
> While running FT8 on my KX2/KXPA100, the TX red LED will sometimes stay on
> and the FT8 waterfall shows blank (like when TXing). ALC is stuck on 1 Bar
> when I've got it set 4-5 Bars. If I click Tune in WSJT-X once or twice I see
> the 4-5 Bars ALC and then all returns to normal.
> 
> Is TX being "Stuck On" my KX2 or WSJT-X acting up? Using Win 10 and a
> Soundblaster Play! 3 USB audio adaptor.
>