CM 300-004 - Marine VHF Radio COBRA - Free user manual and instructions
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| Product Type | Marine VHF Radio |
| Brand | Cobra |
| Model | CM 300-004 |
| Dimensions (H x W x D) | 2.5 x 6 x 1.2 inches |
| Weight | 0.5 lbs (without batteries) |
| Power Source | Rechargeable NiMH battery pack or 6 AA alkaline batteries |
| Waterproof Rating | IPX7 (submersible up to 1 meter for 30 minutes) |
| Transmit Power | 1W / 2.5W / 5W selectable |
| Channels | All US, International, and Canadian marine channels; 10 NOAA weather channels |
| Key Functions | Dual watch, tri-watch, programmable scan, memory channels, weather alert |
| Cleaning and Maintenance | Wipe with damp cloth using mild soap; avoid abrasive cleaners or solvents |
| Safety Precautions | Use only approved antennas; do not operate in explosive atmospheres; keep away from children |
| Spare Parts Available | Antenna, battery pack, charger, belt clip, speaker mic |
| Repairability | Serviceable by authorized technicians; battery and antenna user-replaceable |
| General Information | Includes user manual; typical warranty 3 years; designed for recreational and commercial use |
Frequently Asked Questions - CM 300-004 COBRA
How do I turn on the Cobra CM 300-004?
Press and hold the Power button until the display lights up.
What is the maximum range of this marine VHF radio?
Range depends on conditions; typically up to 5–10 nautical miles between boats, but can vary with antenna height and weather.
How do I switch between high and low power?
Press the HI/LO button to toggle between 1W, 2.5W, and 5W transmit power.
Can I listen to weather channels?
Yes, press the WX button to access NOAA weather channels. The radio will alert you if a weather warning is issued.
How do I charge the battery?
Place the radio in the included desktop charger or connect the charger cable to the side jack. Use only the supplied charger.
Is the radio waterproof?
Yes, it has an IPX7 rating, meaning it can be submerged in up to 1 meter of water for 30 minutes.
How do I set the squelch?
Rotate the Squelch knob clockwise until background noise stops, then adjust for desired sensitivity.
Can I use this radio on land?
It is designed for marine use only. Using it on land may violate local regulations.
How do I perform a channel scan?
Press the SCAN button to start scanning all channels. The radio stops on active channels.
What should I do if the radio gets wet?
Dry it with a soft cloth. Remove the battery pack and dry the compartment. Do not use heat sources.
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USER MANUAL CM 300-004 COBRA
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Product information
Brand : COBRA
Model : CM 300-004
Category : Marine VHF Radio