Standard Horizon Hx500s - Manual (Page 16)

HX500S Page 14
[H/L] KEY
On the Marine Band, changes the transmitter output power between High
(5 Watts), Medium (2.5 Watts), and Low (1 Watt). Does not operate on
“Low power only” and transmission-inhibit channels.
When operating on Canadian channel 13, or USA channels 13 or 67,
pressing this key momentarily toggles the power level from Low power to
medium or High power.
Secondary use:
Hold down this key to lock the keypad (except the PTT, SQL, and [H/L]
keys) so that they are not accidentally changed. The key lock symbol
“
” will appear on the LCD, to indicate that the functions are locked.
Hold down until the key lock symbol “ ” disappears to unlock the radio.
[SCAN] KEY
Starts scanning and priority scanning of programmed channels. When
scanning, press and hold this key to turn on and off priority scan (“P” is
shown on the display during Priority scanning).
[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.
[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. The scan memory is only used
with the Marine and WX channels.
To delete the channel from scan memory, select the channel and press
this key until “MEM” is removed from the display.
BUSY/TX INDICATOR
This indicator glows green when a signal is being received and red when
transmitting.
When the Emergency feature is activated, this indicator blinks the inter-
nationally-recognized Morse Code “S.O.S.” message.