Cobra MR F45-D Owner's Manual page 16

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
not affect the volume of your outgoing messages. That is controlled by the circuitry of
your radio.
To Increase The Volume:
On-Off Power/
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.
To Squelch Your Radio:
Squelch Knob
1. With the Squelch knob turned fully counter-clockwise, turn
the On-Off/Volume knob clockwise until you hear
a hissing (noise) sound.
2. Turn the Squelch knob clockwise until the hissing
Turn Until Hissing
sound stops.
Sound Starts
Turning the Squelch knob further clockwise (higher barrier)
will filter weak and medium strength signals until only
the strongest signal can get through at the highest
squelch setting.
Turn Until Hissing
Sound Stops NOTE
To receive Weaker Signals
Turn the Squelch Knob counterclockwise (lower bearier).
If the squelch is set so that you can hear a continuous
hissing sound, the scan and dual-watch functions will be
Lower Bearier blocked.
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Getting Started
Operating Your Radio
Standby And Receive
Standby mode is the usual mode for the radio whenever it is turned On.
From Standby Mode, You Can:
Standby Mode
Change your radio's settings using set-up routines.
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Receive messages on the current channel as well
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as DSC messages.
Receive NOAA alerts if Weather Alert mode is turned On.
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Switch to Transmit mode using the Talk button.
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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
Up/Down Buttons
You Can Choose One Of The Following:
Press the Up/Down buttons. This will take you to
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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
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you to Channel 16 with one press and to Channel 9
with a second press. Additional presses will toggle between
Channel 16/9 Button
Channels 16 and 9.
Press the Weather/UIC button. This will toggle the
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radio between Standby mode and Weather Radio mode.
When in Weather Radio mode, the Up/Down buttons
will change the weather channel.
Weather/UIC Button
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