Marine radios use the very high frequency (VHF) band between 156 megahertz and 174 megahertz. The communication works with one person speaking at a time and signing off to indicate their portion of the conversation is finished. This allows the other party to begin their side of the discussion.
Smaller vessels can use hand-held marine radios. They are portable with batteries that supply the power. Since they use batteries, the communication range will be smaller due to power constraints. Bracket-mounted marine radios are permanently attached to the vessel, using the boat's battery for power. This allows a larger communication range, especially if installed at the highest point on the vessel.
Even if a bracket-mounted radio is installed, it is helpful to have a back up radio in case of overall failure. Consider purchasing a hand-held radio as a backup to ensure uninterrupted communication.
