My guess would be all non-voice mode communications taking place in
the frequency coverage. I guess my main concern is what if I can't
receive even the voice communication unless it is FM or AM. For
instance, to hear trunk services, one needs expensive scanner (eg.
Radio Shack Pro-96). Any comments?


I'm not following.

You can certainly hear any signal with an FM or AM front end. You can certainly
hear data signals. Truck tracking is a different story. You can still listen to
trunked services, but entering the correct frequencies, but the radio won't
track from channel to channel without a trunk tracking radio.

What'cha trying to hear?

jw
wb9uai