West Marine VHF580 사용자 설명서

41

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)

#

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.)