Cobra Electronics Corporation MRHH400 Manual De Usuario
No display on LCD when
radio is turned On
radio is turned On
Batteries are exhausted
Recharge or replace
batteries
batteries
NiMH batteries run
down quickly
down quickly
Batteries are at the
end of their life
end of their life
Replace with new
batteries
batteries
Will transmit at
one (1) watt, but not
at five (5) watts
one (1) watt, but not
at five (5) watts
Batteries are low
Selected channel is
limited to one (1) watt
limited to one (1) watt
Recharge or
replace batteries
replace batteries
Switch to
another channel
another channel
Will not transmit
Selected channel is
limited to receive only
limited to receive only
Switch to
another channel
another channel
No sound from speaker
Volume level is too low or
Squelch level is too deep
Squelch level is too deep
Re-adjust Volume
and Squelch
and Squelch
No response to
button press
button press
Key Lock is On
Press Backlight/
Key Lock button
Key Lock button
No answer to calls
Out of range of
other station
other station
Signal is blocked
by terrain
by terrain
Switch to five (5)
watts or move closer
watts or move closer
Move until you have
a “line-of-sight” to
the other station
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
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
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:
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)
(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:
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
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.
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.
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.
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
•