KPA1500 - Temp reading drops when under power

[Elecraft mailing list]

Have the same issue "temp drop under power" with Serail #167.  40m. is the worst by far.
 
73,
Dick- K9OM
 
 
In a message dated 8/19/2018 1:46:29 PM Central Standard Time, [hidden email] writes:

 
Subject: KPA1500 - temp reading drops 10C when under power
Message-ID: <[hidden email]>
I just checked mine on 40M and when on CW Temp is
bouncing all over the place. Same into a dummy
load as the antenna 300ft away. It also does it
to a lesser extent on 80M and a little bounce on 17M and 10M.

I suspect its in the amp and not related to common mode RF in the coax.

Probably a cap in the right place would fix it.

- Paul

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