[Elecraft] KPA500 and VSWR

Randy Farmer w8fn at windstream.net
Wed Jul 15 13:26:48 EDT 2020


Good point, Andy. I never thought to use the complex impedance 
measurement capability of the LP-100A to see what the exact load 
impedance was with the old configuration.  If I have occasion to do any 
modifications on my 20-15-10 dipole, I'll try to remember to document 
the before and after load impedances (if it changes anything).

73...
Randy, W8FN

On 7/15/2020 12:25 PM, Andy Durbin wrote:
> I have published actual test data that shows the very strong influence of PA load on PA dissipation for my KPA500.  SWR is not a good indicator of the load mismatch.  You must consider the complex load impedance to see the real picture.



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