Philip Lantz writes:

I still don't know why the VHF comm systems were AM, not FM/PM.
Why would they have chosen to have to have modulators & such
rather than use alternatives?

Isn't AM dead simple compared to FM? Less complexity means less to go
wrong, and probably less weight, too.

It's the other way around. FM/PM modulators are super simple;
amplifer stages after that can be Class C, not A or AB1. M needs
modulation applied the output stage, more power needed to do
that.



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