[Elecraft] When Transmitting on FT8 - KPA500 has issues - KD8ZYD

[Bob McGraw K4TAX]

A clue..... at 500 watts with the KPA500 there is an issue.  At 50 watts 
using just the K3 there is no reported issue.  What's the difference?   
RF field strength.  Sounds like it might be and RFI issue.

Check all PL-259's and make sure they are VERY TIGHT.   Check jumper 
cables, between each piece of equipment and make sure they are in good 
condition and connectors are properly attached and installed.   If in 
doubt, replace them.

73

Bob, K4TAX

On 7/1/2019 10:44 PM, Andy Durbin wrote:
> "That leads me to believe that the K3 output is rapidly changing on and off"
>
> I have not looked at the video but this sounds very similar to a problem I have seen.   In my case HDSDR sound output had spontaneously changed to TS-590 TX CODEC creating a feedback loop through the PC.  Break the loop and all is normal.
>
> 73,
> Andy, k3wyc
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