Kenwood ProTalk TK-3601D User Manual page 39

REVERT CHANNEL
The revert channel is the channel from which you start scanning. For example, if
you are on channel 1 when you begin to scan, your revert channel is channel 1.
During scan, pressing the PTT switch will automatically select the transceiver's
revert channel (in the above example, channel 1) and you will begin transmitting.
However, if you are currently paused on another channel after having received a
signal (for example, channel 2), pressing the PTT switch will allow you to transmit
on that channel, rather than returning to the revert channel. Scanning will resume
after 3 seconds, unless a signal is present on the channel.
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