depends on the systems sometimes the reply is heard on the same
frequency, other times its on the same "virtual channel" but different
frequency. a "virtual channel" can pop up on any available frequency.


Jim wrote:

When a mobile unit calls the dispatcher on a trunked system is that
particular frequency in use the one the reply from the dispatcher will
use? Purpose of the question is that if the answer is yes I'll want to
click on the delay option.