Marine Radio Troubleshooting

Troubleshoot your Cobra marine VHF radio with solutions for noise issues, channel access problems, GPS alerts and connection failures on board.

Eliminating Noise

Noise can be caused by a variety of sources, such as: Atmospheric noise Engine noise (from the ignition system or from the alternator) Any kind of el...

I cannot access one or more marine channels.

Please note that your Cobra marine radio has 3 different channel maps: USA Channel Map – this channel map provides access to channels commonly used in the ...

I am not able to communicate.

Please note that certain channels are intended for simplex operation, while others are intended for duplex operation. SIMPLEX – uses the same frequency for...

I hear excessive noise from the radio.

Noise can be caused by a variety of sources, such as: Atmospheric noise Engine noise (from the ignition system or from the alternator) Any kind of elect...

Why am I getting a "check plotter" alarm?

In most cases, this is caused by unintentional contact with/between the GPS wires. If these wires are unused, they should be taped back/otherwise isolated ...