User's Manual

No display on LCD when
radio is turned
On
Batteries are exhausted Replace batteries
Will transmit at
one-half (
1
⁄2) watt,
but not at two (2) watts
Batteries are low
Selected channel is
limited to one (1) watt
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 Re-adjust volume
No response to
button press
Button Lock is On Press and hold
Hi-Lo/Lock button
No answer to calls Out of range of
other station
Signal is blocked
by terrain
Switch to two (2) watts
or move closer
Move until you have
a “line-of-sight” to
the other station
Problem Possible Cause(s) Solution(s)
37
Nothing comes close to a Cobra
®
Specifications
36
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 6 VDC
Battery Life: 8 Hours @ 2 Watts, 10 hours @
1
⁄2 Watt
5% TX, 5% RX, 95% Stand-by
Current Drain:
Stand-by 10 mA
Receive 35 mA
Transmit 700 mA @ High power 200 mA @ Low
Temperature Range -20˚C to 60˚C
Radio Dimensions
Radio Weight (Lbs)
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 -50dB
Intermodulation and Rejection -60dB
Spurious and Image Rejection -50dB
AF Output .3 Watts @ 8 Ohms
Transmitter
Frequency Range: TX 156.025 to 157.425 MHz
RF Output Power
1
⁄2 Watt and 2 Watt
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. Rinse with fresh water. 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, rinse it in fresh water 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 compartment and store them in a
separate package. This is especially so if you are using alkaline batteries.
Troubleshooting
•