Cobra Electronics MR HH425LI VP - Manual (Page 40)

Introduction
73 Nothing Comes Close to a Cobra ® 72 English
Introduction
Specifications
Specifications
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General
Number of Channels All U.S., Canadian, and International
10 NOAA Weather Channels, 15 GMRS
Channels
Channel Spacing VHF - 25 kHz Max., GMRS - 12.5 kHz
Modulation VHF - 5 kHz Max., GMRS - 2.5 kHz
Input Voltage 7.2 VDC
Battery Life: Lithium-ion: 14 hrs @ 5 watts,
5% TX, 5% RX, 90% Stand-by 23.5 hrs @ 1 watt;
Alkaline: 20 hrs @ 5 watts, 35 hrs @ 1 watt
Current Drain:
Stand-by 40 mA
Receive 200 mA
Transmit 1.8 A @ High power 700 mA @ Low Power
Temperature Range -20˚C to 50˚C
Radio Dimensions 4.8 in. x 2.4 in. x 1.4 in.
(123 mm x 62 mm x 36 mm) not including
antenna
Radio Weight 0 lbs 8 oz. (228 g) without batteries
Receiver
Frequency Range VHF 156.050 to 163.275 MHz
GMRS 462.5500 to 467.7125 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 VHF 156.025 to 157.425 MHz
GMRS 462.5500 to 467.7125 MHz
RF Output Power 1, 3 and 5 watts
Spurious Emissions -60 dB @ High Power, -55 dB @ Low Power
Microphone Type Condenser
Frequency Stability +/-10 ppm
FM Hum and Noise 40 dB
Operating Your Radio
No display on LCD when
radio is turned On
Battery pack is exhausted Recharge or
replace battery pack
Will transmit at
1 watt, but not at
5 watts
Battery pack low
Selected channel is imited
to 1 watt
Recharge or
replace battery pack
Switch to
another channel
Will not transmit Selected channel is
limited to receive only
Switch to
another channel
No sound from speaker Volume level is too low or
squelch level is too deep
Re-adjust volume
and squelch
No response to
button press
Key lock is On Press Backlight/
Key Lock button
No answer to calls Out of range of
other station
Signal is blocked
by terrain
Switch to 3 or 5 watts or
move closer
Move until you have a “line-
of-sight” to the other station
Problem Possible Cause(s) Solution(s)
Maintenance and
Troubleshooting
Operating Your Radio
Maintenance
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Very little maintenance is required to keep your CobraMarine VHF/GMRS radio
in good operating condition:
■ Keep the radio and charger clean by wiping with a soft cloth and mild
detergent. Do not use solvents or harsh or abrasive cleaners, which could
damage the case or scratch the LCD screen.
■ If the radio is exposed to salt water, wipe with a soft, moist cloth at least once a day
to prevent buildup of salt deposits, which could interfere with button operation.
■ If the radio will be stored for a long period, such as over the winter,
remove the batteries from the battery tray and store them in a separate
package. This is especially important if you are using alkaline batteries.
Troubleshooting
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