E - 29
Hum and Noise Signal-to-Noise
45 dB@1 kHz with 3 kHz deviation with 1000 Hz modulating frequency (nominal)
Audio Distortion
Less than 8% with 3 kHz deviation with 1000 Hz modulating frequency
Spurious Suppression
–25 dBm @ Hi, –25 dBm @ Lo
Output Power Stabilization
Built-in automatic level control (ALC)
Frequency Range
156 to 158 MHz
Frequency Stability
±10 ppm @ –20°C to + 50°C
Receiver
Frequency Range
156 to 163 MHz
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
78 dB @ ±25 kHz (nominal)
Audio Output Power
1.5 watts (10% Distortion, 8 Ω load)
Power Requirement
340 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
#
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 ne2rk 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!
STATE CONTROL
messages about government regulation and control, boating activities, or assistance to ships;
also used to talk to ships and coast stations operated by state or local governments
DIGITAL SELECTIVE CALLING
DSC signals only (no voice communications allowed at any time)
US Marine Channels and Frequencies
Ch No.
RX Freq
TX Freq
Status
Name on display
1A*
156.0500
156.0500
Simplex
Vessel traffic system/Commercial
5A
156.2500
156.2500
Simplex
Vessel traffic system/Commercial
