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VHF Marine Radio Protocols
Operating Your Radio
23
Nothing Comes Close to a Cobra
®
Standby/Receive
and Transmit
Advanced Operation
•
Channel 16 Mode
Channel 16 mode gives you quick access to calling on
Channel 16 from any operational mode.
To Switch to Channel 16:
1. Press the Channel 16 button to change to
Channel 16.
2. Press the Channel 16 button a second time and
return to the last used Standby channel.
22
English
VHF Marine Radio Protocols
Operating Your Radio
Advanced Operation
TRI-WATCH Button
TRI and MEM Icons
Tri-Watch Mode
Tri-Watch mode gives you one (1) button access to scan
a total of three (3) channels of most importance to you.
Channel 16 is preprogrammed and will always be one (1)
of the scanned locations. Two (2) other channels of your
choice can be stored in the radio. These channels can be
edited and/or recalled during future engagements of
Tri-Watch mode.
NOTE
The radio must be squelched for Tri-Watch mode to
function. See page 18 for Squelch procedure.
Tri-Watch Setup
To Program or Edit the Tri-Watch Channels:
1. Press and hold the TRI-WATCH button for two (2)
seconds to activate Tri-Watch Setup mode. The
TRI and MEM icons on the display will turn On.
NOTE
The main channel number will flash to indicate channel
position. If there is no input activity for 15 seconds, the
radio will sound two (2) beeps and return to Marine
Standby mode.
Channel 16 Button
Channel 16
Standby/Receive and Transmit
•
Marine Standby and Receive (Rx) Mode
Marine Standby mode is the default mode for the radio whenever it is turned on.
From this mode, you can change current settings by becoming familiar with the
different key functions in Marine Standby mode. While in Marine Standby mode,
the user will be able to transmit by pressing the Push to Talk (Talk) button. Signals
in Receive (Rx) mode will be received on the selected channel(s).
NOTE
Coastguard alerts are broadcast on Channel 16. While in Marine Standby mode,
you will receive any messages sent on the channel to which you are tuned.
Transmit (Tx) Mode
Transmit (Tx) mode gives you the ability to interact with
safety services, other vessels and shore stations. When you
use this capability, be sure to follow the procedures and to
observe the courtesies that govern its use so everyone
benefits. See Appendix to help you select the proper
channels.
To Transmit a Message:
1. Check to see that your radio is set to a proper channel
for the type of message you plan to send.
2. Toggle to the Low Power setting.
3. With the microphone about 5.0 cm [2 in.] from your
mouth, press and hold the Talk button and speak into the
microphone. The Transmit icon will appear on the LCD.
4. Release the Talk button when you are finished speaking.
Your radio can only operate in either Transmit (Tx) or
Receive (Rx) mode at any given time. You will not hear
the response to your message unless the Talk button is
released. If the Battery Power icon begins blinking on
the LCD when the Talk button is pressed, the radio will
NOT transmit.
NOTE
If the Talk button is held down for five (5) minutes,
the radio will automatically sound a series of beeps
and cease transmitting to prevent unwanted signal
generation and battery drain. As soon as the Talk
button is released, it can be pressed again to
resume transmission.
Low Power Mode
Check Channel Number
Talk Button
Transmit (Tx)/Receive (Rx) Icons
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