Keys &
Function
Displays
Squelch Key
H/L Power Key
Squelch Key - This key breaks the squelch (unmutes the audio) when pressed and held. It is also used to set the squelch threshold (the level at which only strong signals can be received). The squelch threshold is set by pressing and holding the squelch key while using the UP/ DOWN keys to adjust the squelch level from 0 to 9. At level 0 (L0), all signals can be heard, while at level 9 (L9), only the strongest signals can be heard. Adjusting the squelch level eliminates weak, unwanted signals, as explained on page 17.
H/L (High/Low) Power Key - This key toggles the transmitter power level from High (5 watts) to Low (1 watt) when pressed and released. It also locks the keypad when pressed and held for more than one second. The Power key, PTT key, backlighting key and the Squelch key still function in the Lock mode. Locking the keypad prevents inadvertent changing of channel settings and feature modes.
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