58
West Marine VHF250 Radio Owner’s Manual
Speci
fi
cations
Transmitter
Items
Unit
Nominal
Frequency Tolerance @ 25° C to 50° C
PPM
±0.5
Frequency Stability -20° C to 50° C
PPM
(MRN, 5W)
W
5
(MRN 2.5W)
W
2.5
(MRN 1W)
W
1
Carrier Power
(FRS/MRN 0.5W)
W
0.5
(MRN 5W)
dBc
53
Spurious Emission
(MRN 2.5W/1W)
dBc
58
500Hz dB
-6
Modulation Frequency Response
2000Hz dB
+6
(MRN for ± 3kHz Deviation) mV
6
Microphone Sensitivity
(FRS for ± 1.5kHz Deviation) mV
6
(MRN) ±kHz
4.5
Maximum Deviation@100mV Input
(FRS with Subaudio)
±kHz
2.3
Modulation Distortion 750
μ
S
De-emphas 0.3 to 3kHz BPF
%
0.6
(MRN)
dB
38
Hum and Noise 750
μ
S
De-emphas 0.3 to 3kHz PF
(FRS) dB
35
(MRN)
mA
1500
Current Drain @ High Power 5W
(FRS) mA
650
General
Item
Description
Channels
All USA, Canadian, and International
Marine-Weather:
156.05 ~ 163.275MHz, 25kHz Step
Family Radio Service:
462.5625 ~ 467.7125MHz, 12.5kHz Step
AM Broadcast:
500.00 ~ 1800kHz, 10 or 9kHz Step
FM Broadcast:
87.5 ~108.0MHz, 100 or 200MHz Step
Frequency
Range/Step
Aircraft:
108.00 ~ 137.00MHz, 25kHz Step
Antenna
Fixed Mount type
Connectors
External MIC/SPEAKER, 2.5mm Diam. 3-contact Stereo type
Controls and
Switches
Volume, Squelch with Power On/Off, Up, Down Keys,Ch16/TRI, Menu, Enter, WX Alert, Scan/Mem,
Band/1,2.5/5W, Push to Talk, Light/Lock
Display
LCD 128 x 64 Full Dot Matrix
Backlight
LCD Front Key -yellow-green color
Cabinet Size
4.21H x 2.55W x 1.38D inches (107 x 65 x 35mm)
Weight
8.8 oz (250 g.)
Speaker
Built-in 32mm diam. Dynamic type (8
Ω
, 0.7W)
Microphone
Built-in Electret type
Supplied
Accessories
Li-Ion Battery Pack (7.4VDC, 1400mA/hr min) AC Adapter, Drop-In Charger, CLA DC Cord, Alkaline
Battery Tray (4xAAA), Belt Clip, Hand Strap
Operating
Temperature
-30° C to 50° C. (Battery charge: 0° C to 45° C.)
Storage
Temperature
-30° C to 60° C
AC Adapter
Input: 100VAC ~ 240VAC, 50/60Hz Output: 12VDC, 1A
Regulation FCC,
IC
Battery Life
(Li-Ion)
10 Hours, Min.
Waterproof Grade
Compliant to JIS7/IPX7 Immersion Protection Standards. Submersible in one meter of water for 30
minutes without damage.
Reference Section