> Kevin Custer wrote:
>
> Yes, we drive on a parkway and park in driveways. We also use FM
> radios on VHF and UHF and manufacturers build new ones every day.
Don't forget - few people actually use UHF connectors on UHF radios!
> Yea, but it likely won't happen since it seems that FM modulators will
> satisfy even the most picky listener (like me). Plus, FM is cheaper,
> or at least right now it is.
It was argued (by Bob @ S-Com) that "If you choose the FM, it must be
accompanied by a preemphasis circuit that covers the entire voice audio
spectrum" while you do not on a PM exciter. I will point to the list
name and remind everyone that when using discriminator audio, you do NOT
need a preemphasis circuit with an FM modulator. In fact, you CAN'T use
one or you will get double-preemphasized audio. With a PM exciter, you
NEED a deemphasis circuit (more components). With FM, you can run the
discriminator right to the modulator. Yes, you should have limiting and
all that, but those factors apply to both models equally.
Joe M.
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