It is difficult to provide a number, because range will be affected by the following factors: Transmit power: Higher transmit power gets better range. Tran...
You will need a marine antenna, designed for the marine band. A CB antenna will not work. For availability, check with local boat dealers and marinas. Make ...
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 ...
Please note that certain channels are intended for simplex operation, while others are intended for duplex operation. SIMPLEX – uses the same frequency for...
The following models can use an external antenna: Models: MR HH300, 325, 400, 415, 425 The antenna connector on your radio is a type “SMA female”. This...
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...
If your handheld radio is not operating properly, the following describes how to reset the radio to factory settings. MR HH90, MR HH100, MR HH200 Hold ...
Digital Selective Calling (DSC) is a radio technology allowing enhanced distress radio messages to be sent digitally. In addition, a DSC equipped vessel wit...
Maritime Mobile Service Identity (MMSI) is a unique 9 digit number that is assigned to a (Digital Selective Calling) DSC radio or an AIS unit. Similar to a ...
MMSI numbers are free for BoatUS members or $25 for non-members. To obtain a new or change your existing MMSI#, visit the BoatUS website.
