somewhere in the midrange depending on the noise level in your aircraft and the noise
canceling properties of your microphone.
The reason this works is that the transmitter employs automatic gain control to ensure that
your carrier is always correctly modulated to achieve maximum range and clarity. When you
press PTT and listen to your side tone – you are actually listening to the transmitter output (a
useful check – what you hear is what is going on air). There is a small “receiver” built into the
output of your transmitter that demodulates the transmitted signal and converts it back to
audio for you to listen to.
The automatic gain control is thus useful to provide a simple to use reference to adjust your
microphone levels correctly.
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