Both category A and D radios can send and receive digitally encoded distress calls on channel 70, which is reserved exclusively for digital communications. Category A radios, however have two separate receivers, with one constantly tuned to channel 70. Category A radios are therefore more flexible and capable of delivering advanced communication capabilities.With the press of a button, all DSC equipped VHF radios can send a distress call in digital form on channel 70. The call, sent in much less than one second, includes your unique identification number (MMSI) and if the radio is connected to a GPS or Loran C, the precise location of your boat. The distress call will continue to be sent until it is answered by another station. The station hearing the call will likely call your radio on channel 16 or, in the case of the Coast Guard on 22A and begin the process of bringing you the help you need. Having a highly automatic way of making your need for assistance known has obvious advantages.

How do i activate my radio

Go to https://www.boatus.com/MMSI/MMSI/Home and register for an MMSI number. Once the MMSI number has been obtained it must be entered into the radio. Push the "CALL/SET" to enter the DSC menu then look for the MMSI entry option. Follow the prompts.

ASIN	B004HSND3M
Best Sellers Rank	#57,252 in Electronics ( See Top 100 in Electronics ) #40 in Marine Two-Way Radios
Color	White
Customer Reviews	4.6 4.6 out of 5 stars (862)
Date First Available	November 3, 2010
Department	Electronics > VHF Radios > Dash Mount VHF Radios
Is Discontinued By Manufacturer	No
Item Weight	2.6 pounds
Item model number	MR F45-D
Manufacturer	Cobra Electronics
Other display features	Wireless
Product Dimensions	12.21 x 9.25 x 2.95 inches
Special features	External Speaker Jack, Illuminated Function Keys, LCD Screen, Signal Strength Meter, Submersible
Whats in the box	Bracket Mount Kit, GPS Interface Cable

MR F45-D Fixed Mount VHF Marine Radio – 25 Watt VHF, Submersible, LCD Display, Noise Cancelling Microphone, NOAA Weather Channels, Signal Strength Meter, Scan Channels, White

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