West Marine VHF580 manual Reference Tables, Channel descriptions and what they mean, Receiver

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General

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	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

##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	primarily emergency messages and distress calls
CALLING
INTERSHIP SAFETY	safety messages from one ship to another, or from a
	ship to Coast Guard aircraft
NON-COMMERCIAL	messages about the needs of the ship, including fishing
(recreational or voluntary	reports, rendezvous, scheduling repairs and berthing
ships only)	information
COMMERCIAL (working	messages about the needs of the ship or the business
ships only)	the ship is engaged in
PUBLIC	calls to the marine operator at a public coast station.
CORRESPONDENCE/	Marine operators can connect you to the telephone
MARINE OPERATOR	network so you can make and receive calls. (There is
	usually a charge for this service.)

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Contents DSC Marine Radio Making a Voice Distress Call Making a Distress CallFaire un appel de détresse vocal Faire un appel de détresseCómo hacer una llamada de apuro por voz Cómo hacer una llamada de apuroContents Introduction FeaturesManual overview ConventionsWhat’s included Getting StartedButton Press to Press and hold to Parts of the RadioButton Press to Press and hold Connector/Cable Connects to For details, seeParts of the Microphone Mode What It Does Use It When To Turn it on./off Setting the UIC Channel Mode USA/CAN/INTHow It Works Turning on the RadioWatch Mode What It Does Use It When To Turn it on./off Normal mode operationNormal mode with Weather Alert Watch Using the radio in normal modeNormal mode with Triple and Dual Watch Message Meaning08 10 11 12 13 15 17 Scan modeNormal mode with both Weather Alert and Triple/Dual Watch Scan mode with Weather Alert Watch Using the radio in scan modeScan mode with Triple and Dual Watch Scan mode with both Weather Alert and Triple/Dual WatchWeather mode with Weather Alert Watch Weather modeUsing the radio in weather mode Using Your Radio Using Your RadioSetting the squelch level Setting the volumeMaking a voice Mayday call Changing the channelChoosing Triple Watch or Dual Watch Boosting the transmission powerUsing Fips codes for weather alerts Lamp adjust Setting the GPS position manuallyChanging display and sound options ContrastWhat is DSC? Using Digital Selective Calling DSC FeaturesAdvanced DSC features What is an Mmsi number?Individual or User Mmsi Number Entering Mmsi numbersGroup Mmsi number Using the DirectoryChannel Up Button Channel Down Button Call type What it does When to use itMaking DSC Calls Select Individual Calling a single station Individual CallCalling all stations All-Ships Call Making an automatic distress callCalling a particular group of stations Group Call Receiving a DSC call Canceling an automatic distress callReceive log DSC Call Type Receive Log InformationMaking Test Calls Test Test CallsReturning a call Receiving Test Calls Position Request and ReplyEnabling automatic test call reply Requesting another station’s position POS RequestSending your own position Position Send Receiving a position request Position ReplyEnabling automatic position reply Renaming Channels Disabling automatic channel switchingPutting the radio into standby ENT-1W/25W Mounting the radio Installing the HardwarePower Supply Requirements VHF Antenna Requirements Connecting the radioGround Wire Color Connecting to a GPS receiverGPS Data External Configuring the GPSConnecting to an External Speaker Connecting to a Chartplotter Problem Things to Try Maintenance and TroubleshootingEngine Noise Suppression Transmitter SpecificationsRadio Specifications Channel descriptions and what they mean Reference TablesReceiver Channel name/description Used forCh No RX Freq TX Freq Status Name on display US Marine Channels and FrequenciesCanadian Marine Channels and Frequencies Ch No RX Freq TX Freq Status Name on display International Marine Channels and Frequencies Ch No RX Freq TX Freq Status Name on display Emergency Alert System Same Information Weather Channels and Frequencies US, CAN, and INTCh No RX Freq Name on display Types of eventsFFW WFW No Response Event CodeNmea Input Nmea OperationNmea Output Basic radio guidelines Three Year Limited Warranty Page QUESTIONS?