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Introduction
37
Nothing Comes Close to a Cobra
®
Specifications
Specifications
36
English
Specifications
•
General
Number of Channels All U.S., Canadian, International and
NOAA Weather Channels
Channel Spacing 25 kHz
Modulation 5 kHz Max.
Input Voltage 7.4 VDC
Battery Life: LiON: 8 hours @ 6 watts,
5% TX, 5% RX, 90% Standby 16 hours @ 1 watt
Alkaline: 18 hours @ 6 watts,
35 hours @ 1 watt
Current Drain:
Standby 40 mA
Receive (Rx) 200 mA
Transmit (Tx) 1.8 A @ High Power, 700 mA @ Low Power
Temperature Range -20˚C to 50˚C
Radio Dimensions 4.8" x 2.4" x 1.4"
(123 mm x 62 mm x 36 mm) not
including antenna
Radio Weight 0 lbs 8 oz. (228 g) without batteries
Receiver
Frequency Range 156.050 to 163.275 MHz
Receiver Type Double Conversion Super-Heterodyne
Sensitivity:
20 dB Quieting 0.35 uV
12 dB Sinad 0.30 uV
Adjacent Channel Selectivity -60 dB
Intermodulation and Rejection -60 dB
Spurious and Image Rejection -60 dB
AF Output 250 mW @ 8 Ohms
Transmitter
Frequency Range (Tx): 156.025 to 157.425 MHz
RF Output Power 1, 3 or 6 watts (5 maximum in Australia)
Spurious Emissions -60 dB @ High Power, -55 dB @ Low
Power
Microphone Type Condenser
Frequency Stability +/-10 ppm
FM Hum and Noise 40 dB
VHF Marine Radio Protocols
Emergency Messages
and Distress Procedure
For Example
“Mayday — Mayday — Mayday”
“This is Corsair — Corsair — Corsair” [repeated three (3) times]
“Mayday Corsair”
“Point Lynas bears 220 degrees magnetic — distance 5 kilometers”
“Struck submerged object and flooding — need pump and tow”
“Four (4) adults, three (3) children aboard — no one injured”
“Estimate we will remain afloat one-half hour”
“Corsair is 8 metre sloop with blue hull and tan deck house”
“I will be listening on Channel 16”
“This is Corsair”
“Over”
VHF Marine Radio Protocols
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