Why don't voice radio communications use FM?

Roger (K8RI) writes:

When I had ISDN and then DSL my Internet bill would have paid for a
lot more flying than that and in a high performance retract to boot!

How many hours? I can fly a sim whenever I'm free; I'd go broke
trying to fly a real aircraft for even a fraction of that time.

When I was in college studying CS at age 47 to 50 my phone bill was
close to $300 a month just so I could get my home work done and I
wasn't even on the Internet then although I used to get into the
boards at different colleges.

I still think that pales in comparison to flying. Around here getting
a private pilot's license costs around $16,000, and that's without
taking into account the time required or related expenses (such as the
need for a car).

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