How to Guide

General
Sensitivity 0.25 μV for 12 dB SINAD (nominal)
Circuit Dual Conversion Super Heterodyne PLL (Crystal for DSC)
Squelch Sensitivity 0.2 μV Threshold
Spurious Response 75 dB (nominal)
Adjacent Channel
Selectivity
70 dB @ ±25 kHz (nominal)
Audio Output Power 2.5 watts (10% Distortion, 8 Ω load)
Power Requirement
360 mA @ 13.8V DC at squelched, 920 mA @ 13.8V DC at
maximum audio output
IF Frequencies
1st 41.925 MHz, 2nd 455 kHz (1st 21.7 MHz, 2nd 455 kHz
for DSC)
REFERENCE TABLES
# NOTE: This radio does not support AIS channels.
CHANNEL DESCRIPTIONS AND WHAT THEY MEAN
The table below lists the display name or channel description used in the following tables
and what each description means.
Channel name/description Used for
DISTRESS SAFETY AND CALLING
primarily emergency messages and distress
calls
INTERSHIP SAFETY
safety messages from one ship to another, or
from a ship to Coast Guard aircraft
NON-COMMERCIAL (recreational
or voluntary ships only)
messages about the needs of the ship, including
fishing reports, rendezvous, scheduling repairs
and berthing information
COMMERCIAL (working ships only)
messages about the needs of the ship or the
business the ship is engaged in
PUBLIC CORRESPONDENCE/
MARINE OPERATOR
calls to the marine operator at a public coast
station. Marine operators can connect you to
the telephone network so you can make and
receive calls. (There is usually a charge for this
service.)
PORT OPERATIONS/VTS (vessel
traffic system)
messages about the movement and safety of
ships in or near ports, locks or waterways. In
certain major ports, some channels may be
restricted to specific types of port operations
messages.
NAVIGATIONAL/BRIDGE TO
BRIDGE
messages about ship navigation, for example,
passing or meeting other ships, maneuvering
through locks, or navigating around
drawbridges. Messages must be short!
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