Standard Horizon HX300E Owner's Manual page 18

Key
Press this key to toggle the operation mode from Speaker Volume ad-
justment, SQL adjustment, and Channel selection.
Secondary use:
a. Press and hold this key to open the squelch, allowing you to moni-
tor the operating channel. Release the key to resume normal (quiet)
monitoring.
b. Setup mode may be enabled. Refer section "8. MENU ("SET")
MODE" for details
Key
Starts scanning and priority scanning of channels programmed into
memory. Refer to section "6.7.1 PROGRAMMING SCAN MEMORY".
Secondary use:
a. Press and hold the
Watch feature.
b. Used to program channels into Scan memory. Refer to section "6.7.1
PROGRAMMING SCAN MEMORY".
Key
Immediately recalls one of up to 10 user preset memories for each band
(shown as " P0 " - " P9 " on the LCD). Refer to section "6.6.2 OPERATION".
Secondary use:
Used top program channels into the Preset Channel memory. Refer to
section "6.6.1 PROGRAMMING".
Speaker
The internal speaker is located here.
CHG (Charge) Cover/Jack ( Left Side Panel )
This mini-USB (Type-B) jack allows to connection to the supplied PA-
54C/U USB Wall Charger with the supplied Charge Cable.
Microphone
The internal microphone is located here.
When transmitting, position your mouth about 1.2 to 2.5 cm away from
the small mic hole. Speak slowly and clearly into the microphone.
Water Enabled Light
When the HX300E comes in contact with water, the light will blink red to
assist finding the radio in low light conditions. This feature operates when
the radio is on or off. To setup the blinking of the light refer to section
"8. MENU ("SET") MODE".
Page 18
key for two seconds to activate the Dual
HX300E