transmit one tone and receive a different one. What's more, with 256 channels you can set it up with all GMRS frequencies many times over, each with a different tone set for any repeaters you happen to encounter. Then scan all of them if you like. Or, you can only ...
Transmitting to a repeater is done at a special range of frequencies. Those channels are sometimes referred to as 15rp, 16rp, … up to 22rp. While the repeater is receiving on those channels it’s transmitting whatever it receives on the regular channels 15-22, which are each exactly 5 ...