RT87 memory channel
On channel mode, press "EXIT" to enter "VFO" mode, adjust the frequency you want, press "F", then press "EXIT", press "up key" or "down key" to select the channel you want to save , click the "F" button to save the channel.
RT87 delete channel
Shut down in channel mode, press and hold the "EXIT" and power buttons at the same time to power on, press the "up key" and "down key" to select the channel you want to delete, select the "F" button to delete, and select "EXIT" to exit.