Advanced Operation - Cobra MRF77 Manual

Advanced Operation

Cobra has incorporated several features in your CobraMarine VHF radio to give you quick
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access to the voice calling channels and to let you monitor more than one (1) channel at
once.
When NOAA broadcasts a Weather Alert Signal and your radio is in the Weather Alert mode,
you will hear a continuous audible tone and the radio will automatically switch to Weather
Radio mode. The alert indicators will sound regardless of what channel you are operating on
as soon as a NOAA alert signal is received.
When You Hear The Alert:
1. Press any key to turn Off the alert alarm and LCD indicator.
This function gives you quick access to calling Channel 16 or Channel 9 from any
operational mode.
To Switch To Channel 16 Or Channel 9:
1. Press the Channel 16+ button to change to Channel 16 from
any channel.
2. Press the Channel 16+ button again to change to Channel 9.
Additional presses of the Channel 16+ button will toggle back to
the original channel and between channels 16 and 9.
Tri-Watch gives you one (1) soft key access to scan the three (3) channels of most importance
to you. Channel 16 and Channel 9 will always be included as scanned channels. The
remaining channel will be the VHF channel in effect when you enter Tri-Watch mode.
NOTE
The radio must be squelched for tri-watch to function. See page 26 for
squelch procedure.
To Enter Tri-Watch Mode:
1. In Standby mode, use the Up/Down buttons to go to the
channel you want to add as the third location to be scanned.
2. Press the Tri-Watch soft key.
Tri-watch will be indicated on the LCD and the radio will scan
between Channel 16, Channel 9, and the third tri-watch channel
you selected. A signal on any one (1) of the three (3) channels
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will stop the scan to allow you to listen to the traf c on the
channel. The channel number will be displayed on the LCD.
To Exit Tri-Watch Mode:
1. Press the Tri-Watch soft key. The radio will return to
Standby mode
During Tri-Watch (while receiving an incoming transmission),
You Can Choose From The Following:
a. Press the Talk button to remain on that tri-watch channel and
return to Standby mode.
If you do not press any buttons, your radio will automatically
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resume scanning tri-watch channels when the incoming
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transmission is complete.
During Tri-Watch (while not receiving a transmission):
a. Press the Talk button to communicate on the last tri-watch
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channel scanned and return to Standby mode.
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