On Wed,11/19/2014 3:50 AM, Ken wrote:
On Nov 10, 2014, at 7:30 PM, Joe Subich, W4TV wrote:
>Depending on the crest factor (peak to average ratio) of the mode
>in use, the average power from the KPA-5000 should be kept 6 to 10
>dB below the rated maximum (e.g., 60 to 150 watts) just as a 100W
>transceiver should be kept between 10 and 25 watts average.
Joe made this statement assuming that the KPA500 produced FAR more
distortion than it actually does. A few days later, I showed
measurements with a K3 driving a KPA500 to 500W with PSK31 showing that
the distortion was EXTREMELY low. I had already published comparable
measurements for CW and SSB, with the same result.
P3SpectrumMeasurementsSlides.pdf
73, Jim K9YC
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