Cobra Marine MR HH400, Owner'S Manual

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No display on LCD when
radio is turned On Batteries are exhausted Recharge or replace
batteries
NiMH batteries run
down quickly Batteries are at the
end of their life Replace with new
batteries
Will transmit at
one (1) watt, but not
at five (5) watts Batteries are low
Selected channel is
limited to one (1) watt
Recharge or
replace batteries
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 five (5)
watts or move closer
Move until you have
a “line-of-sight” to
the other station
Problem Possible Cause(s) Solution(s)
45
Nothing comes close to a Cobra ®
Specifications
44 English
Maintenance and
Troubleshooting
Specifications
•
General
Frequency Range: TX 156.025 to 157.425 MHz
Frequency Range: RX 156.050 to 163.275 MHz
Number of Channels All U.S., Canadian, and International
10 NOAA Weather Channels
Channel Spacing 25 kHz
Modulation 16KOF3E
Input Voltage 7.2 VDC
Battery Life: 8 Hours @ 5 Watts, 10 hours @ 1 Watt
5% TX, 5% RX, 95% Stand-by
Current Drain:
Stand-by 20 mA
Receive 200mA
Transmit 1.8A @ High power 0.7A @ Low
Temperature Range -20˚C to 60˚C
Radio Dimensions 5.5" x 2.2" x 1.4"
(14 cm x 5.6 cm x 3.6 cm)
Radio Weight (Lbs) 1.1 lbs
Receiver
Frequency Range 156.050 to 163.275 MHz
Receiver Type
Sensitivity:
20 dB Quieting 0.35 uV
12 dB Sinad 0.30 uV
Adjacent Channel Selectivity -60dB
Intermodulation and Rejection -60dB
Spurious and Image Rejection -60dB
AF Output 4 Watts @ 8 Ohms
Transmitter
Frequency Range: TX 156.025 to 157.425 MHz
RF Output Power 1 and 5 Watts
Spurious Emissions -60 dB High -55 dB Low
Microphone Type Condenser
Microphone Impedance
Frequency Stability
+/-5 ppm
FM Hum and Noise -45dB
Operating Your Radio Operating Your Radio
Maintenance
•
Very little maintenance is required to keep your CobraMarine ™ VHF 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 build-up 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 so if you are using alkaline batteries.
Troubleshooting
•