Cobra Electronics Mrf 80b owner manual Squelch, Channel Select Using Radio Knob

F80 Installation.qxp:QXP-1058720374.qxp 12/29/06 10:03 AM Page 38

Operating Your Radio

Squelch Knob

Channel Select Knob

Getting Started

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.

SELECT

MEM

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.

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