Changing the Range of VHF Transmissions
By default, the radio operates in low-power mode (1 W) on all channels except channel 16. On channels that support both modes, you can switch between high-power and low-power mode.
NOTE:
If you switch to high-power mode and change to a different channel, the radio remains in
high-power mode if the new channel allows it.
Changing Transmit Power Using the Fist Mic
Press 
.
.
If the current VHF channel allows it, the radio switches between high-power mode and low-power mode.
Changing Transmit Power Using the Touchscreen
Select .
If the current VHF channel allows it, the radio switches between high-power mode and low-power mode.