Icom IC-718 - Page 25

'Initial Set' mode – PTT tune p. 46
One uses the [ Up ] & [ Dwn ] Buttons to navigate to navigate
to PTT - Tune
Rotating the main tuning knob to set 'On'.
Off = Auto tuner does not activate on pressing PTT button
On = Auto tuner activates on pressing PTT button
Default is 'Off'