Why don't voice radio communications use FM?

Mxsmanic wrote:
Odd that FM seems to sweep AM out of so many markets, then. All the
FM transmissions I've heard were superior to AM.

That's the reason for your error. You are relying on your experience
with broadcast radio, without compensating for other differences.

Broadcast FM has huge bandwidth. (look it up - don't just take it from me)

Broadcast AM has tiny bandwidth. (look that up too)

It is the bandwidth difference that makes broadcast FM look better than
broadcast AM, not the encoding difference.

Think of it this way - they make concrete highways and dirt roads.
Station wagons are allowed only on dirt roads, sedans are allowed only
on concrete highways. I can get from NY to CA much faster in a sedan.

Are sedans inherenly faster?

Jose
--
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