Cobra Electronics Mrf 80b - Manual (Page 61)

58 English
Product Features
Introduction
Digital Select Calling (DSC)
Setup
Digital Select Calling (DSC) Setup
•
Digital Selective Calling (DSC) uses digital signals to increase messaging range. This
provides the most reliable message delivery per watt of output power. Digital signals
are less susceptible to distortion from noise and atmospheric conditions than analog
signals.
DSC equipped radios also interface with GPS and automate many operations for
sending and receiving messages. This results in compact, accurate messages and
less airwave congestion.
Setup procedures for all DSC features use the Setup menu. Refer to page 40 for
information on entering and exiting the Setup menu.
User MMSI Number
The nine (9) digit MMSI number, similar to a telephone number, is a unique identifier
for a vessel. DSC incorporates this number into every message that is Sent (Tx) or
Received (Rx). Enter the MMSI number as soon as you receive your MMSI number
from the issuing agency listed on page 9.
NOTE
The radio does not operate in the DSC mode until an official MMSI number is
entered. An error tone will sound when attempting to operate in the DSC
mode without an MMSI number.
To Enter an MMSI Number:
NOTICE
Only one MMSI number change is allowed on this unit. To prevent constant
changes and potential errors, this MMSI number limitation is on all DSC
capable radios. If the MMSI number must be changed more than once, return
the radio to Cobra Electronics for resetting. Once the radio is reset, another
MMSI number may be entered and the radio can then be used in the DSC
mode.
Operating Your Radio
8187-F80-Operation-8_MMB:F75-Operation-8 12/29/06 9:03 AM Page 58