On Mon,12/12/2016 2:18 PM, Manfred Mornhinweg wrote:
But is it in an RF amplifier? Really?
Spend a bit of time on any ham band with a spectrum analyzer that has
good frequency resolution and you'll learn in the first 30 minutes that
this is true.
Or take a look at pictures from mine looking at CW and SSB signals.
http://k9yc.com/P3_Spectrum_Measurements.pdf
Or Fig 1 on page 3 of http://k9yc.com/ContestAudio.pdf
Or set up a 2-Tone IMD test using whatever generators you happen to have
in your lab. The Elecraft K3 has one built-in. See K6XX's test results
here. http://k9yc.com/K6XXAmpTalk.pdf
The splatter MUST be created in the power amp -- AF harmonics outside
the SSB filter will be suppressed by that filter.
73, Jim K9YC
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
|