For you folks that go on and on and on abt diminishing returns, why don’t
you toss the arrl book in the trash..and find out for yourselves.
later... Jim VE7RF
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Since that is the only part of your statement that isnt a steady
repeat....youre starting to remind me of Rich....here is my reply.
At say 2500VDC a 25V ripple is only 1%. Who can hear it, even as an AM
linear? Sure another 10X reduction looks nice on a scope but our ears arent
so sensitive.
Its the same with an audio amp, to a speaker or as a modulator. If the low
level input signal is clean so will the output even if the ripple isnt as
good in the amp.
IMD reduces a bit as regulation improves but how much? Ive asked you this
many times but never an answer.
With most store bought amps having 8-12% idle current to full PEP
regulation how much IMD improvement is there in each 1% improvement? The few
tests Ive done here using the eyeball and then the Peak Hold method on the
SA while inputting a voice track into the exciter shows under 1dB using a
TS-940 and TS-950SD which have excellent IMD to start with....sometimes
better than the amps published specs.
It also tells me what the RF speech processor contributes at various
settings. I now have Ragchew and Pileup settings (-;
Carl
KM1H
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