Cobra Electronics MR F55 - Manual (Page 21)

Nothing comes close to a Cobra ®
Getting Started
37
Standby And Receive
Standby mode is the usual mode for the radio whenever it is turned On.
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:
a. 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.
b. 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.
c. 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.
Standby Mode
Weather/UIC Button
Up/Down Buttons
Channel 16/9 Button
Operating Your Radio
36 English
Getting Started
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:
1. Turn the On-Off Power/Volume knob clockwise.
To Decrease The Volume:
1. 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:
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
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:
1. 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 blocked.
Squelch Knob
Lower Bearier
Turn Until Hissing
Sound Stops
Turn Until Hissing
Sound Starts
On-Off Power/
Volume Knob
Operating Your Radio