Standard Horizon HX870 Owner's Manual page 23


SQL switch (Left side)
Press this key to activate the squelch adjusting mode. Press the CH▲ or
CH▼ key to adjust the squelch threshold level.
Press and hold the squelch key for 3 seconds to open the squelch, allow-
ing you to monitor the operating channel. Press this key to resume normal
(quiet) monitoring.

MIC hole
The internal microphone is located here.
When transmitting, position your mouth about 1/2 to 1 inch (1.2 ~
2.5 cm) away from the small mic hole. Speak slowly and clearly
into the microphone.

Keypad
MENU key
Press to access MENU.
CH▲ key
This key is used to change the operating channel and squelch thresh-
old level.
Press the key momentarily, the channel (or level) increases one step.
Holding the key, the channel (or level) increases continuously.
CH▼ key
This key is used to change the operating channel and squelch thresh-
old level.
Press the key momentarily, the channel (or level) decreases one step.
Holding the key, the channel (or level) decreases continuously.
key
Hold down this key to lock the keypad so that they are not accidentally
changed. "LOCK" will appear on the entire screen, to indicate that the
functions are locked. Hold down this key until "UNLOCK" appears to
unlock the radio.
◄/► key
Press to toggle the on-screen menus to right/left.
VOL+ key
Press to increase the speaker audio volume level.
HX870
NOTE
Page 23