Hi,
The problem appears to be blown relays for the 20m LPF in the KXPA100.
73 Tom
va2fsq.com

-----Original Message----- From: Don Wilhelm Sent: Friday, October 27, 2017 5:48 PM To: Tom ; Elecraft Subject: Re: [Elecraft] Did I fry my KXPA100?
Tom,

I certainly don't know what the problem may be, but someone in support may be able to help you.

73,
Don W3FPR

On 10/27/2017 4:56 PM, Tom wrote:
Hi,
No, I didn't.
However, it seems that the amp is not blown.
I have no idea what's happening...

Ok, Elecraft recommended a TX Gain calibration. That was successful on all bands.
I changed all the RF cables and the KXPA100 still shows no output...

However, this was on 20m.
If I switch bands, the KPXA100 is working fine on all other bands. It just so happens that this seems to happen only on 20m. Everything looks the same as far as I can tell, same antenna (all testing is into a dummy load)
So it is only on 20m.
What have I missed?

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