Boaters Marine Supply offers DIGITAL ANTENNA, VHF Antennas, AM/FM Antennas, AIS Antennas, SSB Antennas, Cell amplifiers - Repeaters, Antennas, Our selection of marine electrial components, cell amplifiers - repeaters, antennas, and wire - cable will allow you to speak and be heard clearly on a cell phone inside your boat, RVs, homes, or office without feeling out of touch. The Digital PowerMax DA4000SBR increases signal strength and improves cellular communication without a physical connection to your cell phone. This amplifier/repeater also boosts the performance and range of your cell phone up to 50 miles.  Digital Antenna is the world leader in marine, land antenna, technology with award winning antennas, that extend the range of your marine, RV, car, truck, home and office communications. It’s easy to stay connected on land or at sea with Digital Antenna.