Marine VHF radio is a worldwide system of two way radio transceivers on ships and watercraft used for bidirectional voice communication from ship-to-ship, ship-to-shore (for example with harbormasters), and in certain circumstances ship-to-aircraft. It uses FM channels in the very high frequency (VHF) radio band in the frequency range between 156 and 174 MHz, inclusive. In the official language of the International Telecommunication Union the band is called the VHF maritime mobile band. In some countries additional channels are used, such as the L and F channels for leisure and fishing vessels in the Nordic countries (at 155.5–155.825 MHz). Transmitter power is limited to 25 watts, giving them a range of about 100 kilometres (62 mi; 54 nmi).
Marine VHF radio equipment is installed on all large ships and most seagoing small craft. It is also used, with slightly different regulation, on rivers and lakes. It is used for a wide variety of purposes, including marine navigation and traffic control, summoning rescue services and communicating with harbours, locks, bridges and marinas.
The IP67 and float on the water
Vibration Water Draining Function
All USA/Internation/Canadian Marine Channels
RA26 Waterproof IP67 Marine Handheld VHF Radio
This is a small, exquisite, and easy-to-install marine transceiver, Comply with ITU-R M.493-13 Class D DSC (digital selective calling), supports the latest marine channel standards and DSC protocol standards, features DSC Test Calling and Automatic Position Polling ,There are 11 categories of DSC distress calls, and all DSC calls have 3 security categories, weather channel with weather warning,IP67 submersible waterproof rating ,Separate Receiver for CH70 (Receiving DSC Calls),Dot matrix screen display ,Easy to operate icon and menu system ,Built-in GNSS Module ,Support GPS, GLONAS, SBAS Satellite-based Augmentation System (WAAS/EGNOS/MSAS/GAGAN),And support multiple NMEA format transmission, Very suitable for ocean navigation.