Standard Horizon HX280S Owner's Manual page 16

[ MEM ] Key
Press this key to memorize the selected channel for scanning. When
pressed a "MEM" icon will be shown on the LCD display indicating the
channel has been saved to scan memory.
To delete the channel from scan memory, select the channel and press
this key until "MEM" is removed from the display.
[ H/L ( )] Key
Press this key to toggle the transmitter output power between "High" (5
Watts) and "Low" (1 Watt) power. This key does not function on the "Trans-
mission Inhibited" and "Low power only" channels.
Secondary use:
Hold down this key to lock the keypad (except the [ SQL ] , [ H/L ( )] and
PTT keys) so that they are not accidentally changed. The " " icon will
appear at the bottom right corner on the display, to indicate that the func-
tions are locked. Hold down this key until the " " icon disappears to un-
lock the radio.
[ 16/9 ] Key
Pressing this key immediately recalls channel 16 from any channel loca-
tion. Holding down this key recalls channel 9. Pressing this key again re-
verts to the previous selected working channel.
[ PRESET ] Key
Immediately recalls one of up to 10 user preset memories for each band
(shown as "0" - "9" on the LCD). Pressing this key repeatedly scrolls through
the preset memory channels.
Speaker
The internal speaker is located here.
Microphone
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 micro-
phone.
Battery Pack Lock ( Bottom side )
Slide the Battery Pack Lock to the " " position for battery removal.
Page 16 HX280S