Maintenance and
Troubleshooting
Operating Your Radio
Maintenance
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Very little maintenance is required to keep your CobraMarine VHF radio in good operating condition.
■Keep the radio 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 buildup of salt deposits, which could interfere with button operation.
Troubleshooting |
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Problem | Possible Cause(s) | Solution(s) |
No display on LCD when | Improper power | Ensure power connections |
radio is turned On | connection | are proper and secure |
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Will transmit at | Selected channel is | Switch to |
1 watt, but not | limited to 1 watt | another channel |
at 25 watts |
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Will not transmit | Selected channel is | Switch to |
| limited to receive only | another channel |
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No sound from speaker | Volume level is too low or | Readjust volume |
| squelch level is too deep | and squelch |
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No answer to calls | Out of range of | Switch to high power |
| other station | (25 watts) or move closer |
| Signal is blocked | Move until you have |
| by terrain | a |
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| the other station |
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DSC distress | MMSI | Enter your MMSI number |
cannot be sent | (DSC |
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| number is not entered |
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Operating Your Radio | Specifications |
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Specifications | • |
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General |
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Number of Channels | All U.S.A., Canadian, and International |
| NOAA Weather Channels |
Channel Spacing | 25 kHz |
Modulation | 5 kHz Max. |
Input Voltage | 13.8 VDC |
Current Drain: |
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100 mA | |
Receive | 500 mA |
Transmit | 5A @ High power 1A @ Low |
Temperature Range | |
Unit Dimensions | 6.375" x x 6.25" |
| (162 mm x 76 mm x 159 mm) |
Unit Weight | 2 lbs., 6.8 oz. (1100 g) |
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Receiver |
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Frequency Range | 156.050 to 163.275 MHz |
Receiver Type | Double Conversion |
Sensitivity: |
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20 dB Quieting | 0.35 uV |
12 dB Sinad | 0.20 uV |
AF Output | 4 Watts @ 8 Ohms |
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Transmitter |
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Frequency Range: TX | 156.025 to 157.425 MHz |
RF Output Power | 1 and 25 Watts |
Spurious Emissions | |
Microphone Type | Electret |
Frequency Stability | |
FM Hum and Noise | 40 dB |
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64 English | Nothing Comes Close to a Cobra® 65 |