Cobra Electronics MRF45 owner manual Volume, Standby And Receive, Squelch

Getting Started

Operating Your Radio

Volume

The On-Off Power/Volume knob on the transceiver controls the speaker volume. The volume adjustment applies only to what you hear from the speaker and does

Getting Started

Operating Your Radio

Standby And Receive

Standby mode is the usual mode for the radio whenever it is turned On.

not affect the volume of your outgoing messages. That is controlled by the circuitry of your radio.

On-Off Power/	To Increase The Volume:
Volume Knob	Turn the On-Off Power/Volume knob clockwise.

To Decrease The Volume:

Turn the On-Off Power/Volume knob counter-clockwise.

Squelch

Squelch control filters weak signals and radio frequency noise so that you can more clearly hear the signals you want. You can think of it as a variable barrier that blocks what you don’t want to hear.

Standby Mode

Up/Down Buttons

From Standby Mode,You Can:

■Change your radio’s settings using set-up routines.

■Receive messages on the current channel as well as DSC messages.

■Receive NOAA alerts if Weather Alert mode is turned On.

■Switch to Transmit mode using the Talk button.

While the radio is in Standby mode, the Receive mode is entered whenever a strong enough signal to break squelch is sent to the radio. You will hear the message through whichever speakers are connected to the radio.

To Change The Channel You Are Listening To You Can Choose One (1) Of The Following:

Squelch Knob

Turn Until Hissing Sound Starts

Turn Until Hissing Sound Stops

To Squelch Your Radio:

1.With the Squelch knob turned fully counter-clockwise, turn the On-Off/Volumeknob clockwise until you hear a hissing (noise) sound.

2.Turn the Squelch knob clockwise until the hissing sound stops.

Turning the Squelch knob further clockwise (higher bearier) will filter weak and medium strength signals until only

the strongest signal can get through at the highest squelch setting.

To Receive Weaker Signals:

Turn the Squelch knob counterclockwise (lower bearier).

Channel 16/9 Button

■Press the Up/Down buttons. This will take you to the next higher or lower VHF channel. For rapid advance, press and hold the Up or Down button.

■Press the Channel 16/9 button. This will take

you to Channel 16 with one (1) press and to Channel 9 with a second press. Additional presses will toggle between Channels 16 and 9.

■Press the Weather/UIC button. This will toggle the

radio between Standby mode and Weather Radio mode. When in Weather Radio mode, the Up/Down buttons will change the weather channel.

Lower Bearier

If the squelch is set so that you can hear a continuous hissing sound, the scan and dual-watch functions will be blocked.

Weather/UIC Button

36 English

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