Andrew,
Your first problem is power control, that will not be seen with a
Spectrum Analyzer.
Do the voltage tests that I recommended first. After you get power
level control, then you can proceed to a Spectrum Analyzer if you want.
73,
Don W3FPR
On 7/28/2026 7:26 PM, Andrew Lenton wrote:
Yep good Idea, I did not build the KPA 100, but was given it, I have
brought up to the latest spec, the wires are a bit short, RF, DC and
ribbon cable.
I have changed the RF cable for RG174, but not the other too, all good
when resting on a book!
I will pop a coupler on and see what a spectrum Analyser sees when it
takes off on tune.
I wished Elecraft used SMA's
KR
Andrew
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