[AMPS] Class C SSB amplifier

William Fuqua Wlfuqu00@pop.uky.edu
Mon, 10 Jan 2000 11:48:37 -0500


Dave,
    You can't make a passive high power filter that will eliminate
the carrier and one side band at HF frequencies.
    However years ago some transmitters were built using the phasing method
and 2 modulators and 2 balanced class C mixers.
This produced a high power (100w) single side band signal with out the use 
of a linear amplifier.
However efficiency is lost over all due to the fact that you had to power the
two plate modulators.  The over all efficiency was less than 50%.

73
Bill wa4lav


At 08:42 AM 1/10/00 -0700, you wrote:

>Has anybody on the list ever developed a nice high efficiency class C
>amplifier for HF and then SSB modulated the low pass filtered output? Seems
>like it would be relatively easy to build a very high efficiency (70% or so)
>solid state class C amp. The hard part would be the power modulator. Anybody
>have any experience with this or can direct me to a source?
>
>Thanks,
>
>Dave
>K0QE
>
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