Cobra Electronics Mrf 80b - Manual (Page 41)

38 English
Squelch
Squelch control is controlled by turning the inner (back)
rotary concentric knob located directly behind the On/Off –
Volume knob. With the power On, turn the knob
counterclockwise till you hear a hissing sound, then turn the
knob clockwise till the hissing stops. This will establish a
“Baseline” squelch.
By turning the knob further in a clockwise direction, you will
filter weak and medium-strength signals. By turning the
knob further in a counterclockwise direction from your
baseline setting, you will receive weaker signals.
Squelch control filters weak signals and radio frequency
(RF) noise so that you will clearly hear the signals you want.
NOTE
If the Squelch is set so that you can hear a continuous
hissing sound, the Memory Scan and Tri-Watch
functions will be blocked.
Channel Select Using Radio Knob
Allows for the manual selection of all the VHF marine
channels that have been established for use in the U.S.A.,
Internationally and in Canada.
NOTE
This knob will also allow scrolling in many of the
setup and advanced operation menus.
When the Channel Select knob on the radio is turned in a
clockwise rotation, higher numbered VHF marine channels
can be accessed. When the Channel Select knob on the
radio is turned in a counterclockwise direction, lower
numbered VHF marine channels can be accessed.
Channel Select Using Microphone
By pressing microphone Channel Up button, higher
numbered VHF marine channels can be accessed. By
pressing the microphone Channel Down button, lower
numbered VHF marine channels can be accessed.
Getting Started
Operating Your Radio
Squelch Knob
SELECT
MEM
Channel Select Knob
F80 Installation.qxp:QXP-1058720374.qxp 12/29/06 10:03 AM Page 38