Don W3FPR wrote:
<snip>
I always have bad feelings about attempts to use ALC as a power output
limit - expecially on SSB because it only leads to distortion. It is a
form
of compression, but audio compression is much better at increasing the
average power of a signal. One could design a compressor that works at
RF,
but it would be quite different than the ALC found in most transceivers.
------------------------------------------------------------------------
'Forward gain control' can be very effective on SSB when done within the low
level RF stages of a transmitter. IMHO the usual type of ALC which is a
'Backward gain control' system should only be used as a safety or protective
system set to limit abnormal power output, not to increase 'Talk Power' for
the reason you mention.
73,
Geoff
GM4ESD
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