by filtering out any background channel noise. At the lowest
squelch level, the speaker plays all signals, including any
channel noise. Setting the squelch level higher filters out
noise and lets only actual radio transmissions through.
While listening to a channel, press and hold VOL-SQ to enter
Squelch Setting mode.The SQUELCH Level adjustment bar
displays on the LCD. Press CHANNEL UP or CHANNEL
DOWN to increase or decrease the squelch levels (0 - 15).
# Note: Setting the squelch level too high may prevent you from
hearing weaker transmissions. If you are having difficulty
hearing a transmission, try setting the squelch level lower.
Setting the UIC Channel Mode (USA/CAN/INT)
You can select marine channels for the USA, Canada, or
1. Press MENU/CALL. The Normal menu displays.
2. Select Setup and press ENTER H/M/L.The Setup menu
3. Select USA/CAN/INT and press ENTER H/M/L. The UIC
Channels screen displays.
4. Select the mode you want and press ENTER H/M/L.
Setting Key Lock
You can lock and unlock the keypad through the Setup menu.
You can also unlock it by pressing and holding MENU/CALL
for 2 seconds.
Setting WX Alert Mode
From the SETUP menu, select WX Alert mode to turn this
mode ON for the radio to monitor weather channels and alert
you to any broadcast weather alerts or notifications.
Setting FIPS Codes
FIPS codes identify geographic areas in the United States.
FIPS codes allow you to receive only the SAME alert
occurring in a specific area. You can enter a maximum of 30
Uniden MHS135 Radio Owner's Manual