Cobra Electronics Mrf 80b Fish Finder User Manual


 
Nothing Comes Close to a Cobra
®
Voice Calling
7
Limits on Calling
You must not call the same station for more than 30 seconds at a time.
If you do not get a reply, wait at least two (2) minutes before calling again.
After three (3) calling periods, wait at least 15 minutes before calling again.
Change Channels
After contacting another station on a calling channel, change immediately
to a channel which is available for the type of message you want to send.
Station Identification
Identify, in English, your station by your FCC call sign, vessel name and the state
registration number, at both the beginning and at the end of the message.
Prohibited Communications
You MUST NOT transmit:
False distress or emergency messages.
Messages containing obscene, indecent or profane language.
General calls, signals or messages (messages not addressed to a particular
station) on Channel 16, except in an emergency or if you are testing your radio.
When you are on land.
Voice Calling
To Call Another Vessel or Shore Installation (e.g. Lock or Bridge Tender):
Make sure your radio is On.
Select Channel 16 and listen to make sure it is not being used.
NOTE
Channel 9 may be used by recreational vessels for general-purpose
calling. This frequency should be used whenever possible to relieve
congestion on Channel 16.
When the channel is quiet, press the Talk button and call the vessel you wish
to call. (Hold the microphone/speaker a few inches from your face and speak
directly into it in a normal tone of voice — clearly and distinctly.) Say “[name
of station being called] THIS IS [your vessel’s name or call sign].”
Once contact is made on the calling channel, you must switch to a proper
working channel. See the channel listing on page 14 through 15.
VHF Marine Radio Protocols
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