advice on mini FM transmitter

[MaggieL]

Originally posted by verbatim
Correct me if I'm wrong, but AM does not do this, Maggie?

You're right, it doesn't. If two AM signals are within the passband of an AM receiver, the audio result is a heterodyne squeal that represents the sum of the two signals. You hear it on CB radio all the time when two transmitters key up on the same channel.

This is one reason VHF aviation radio is still conducted in AM mode; if two aircraft key-up at the same time (as in the case of two aircraft with similar callsigns acknowleging the same landing clearance) air traffic control wants to know that' s happened, rather than having the stronger signal conceal the weaker one.