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Digital Antenna 2G/3G RV/Marine 3W Cell Phone Booster/Repeater


For Boats with Cabins and RVs

Get more bars with digital Antenna’s PowerMax Marine/RV wireless cell phone booster.

DA4000MR can be used with all 850/1900 MHz digital cell phones & tri-mode phones operating on CDMA, TDMA, PCS, GSM 850/1900, GPRS and AMPS (except LTE Data or iDEN).

50dB Gain, 3-Watt Dual Band (Tri-Mode) Wireless Cellular & Air Card Amplifier / Repeater.

PowerMax Cellular Boosters are an NMEA, CES, and NMMA Awards Winner for Quality and Performance.

Speak and be heard clearly on your cell phone without feeling tied down. By using Digital Antennas wireless PowerMax mobile repeater with your cell phone you’ll experience greater power, range and reliability.  Digital Antenna has created the only wireless 3-watt mobile dual band amplifier/repeater in the world for use in boats, cars, RVs, homes, and offices. Superior performance and outstanding range -- unequaled in the industry -- can now be yours!

Increased signal strength and excellent reception are now available without a physical connection to your cell phone. How does this work? An outside antenna receives the signal from the cell tower, the signal is amplified by the DA4000MR unit and repeated to your cell phone through the inside antenna. This technology even allows clean and clear wireless functioning of multiple cell phones operating on 850/1900 MHz bands simultaneously (coverage area up to 1,000 square feet, or one room, or one standard car or boat interior). This translates into fewer dropped calls, clear and strong connections and excellent range. Your guests will love you for boosting the signal of their cell phones!


  • Wireless no connections to cell phone
  • The system comes complete and easy to install
  • Use multiple cell phones and carriers at the same time
  • Increases cell phone range up to 50 miles
  • Amplifies 850/1900 MHz bands (Tri-Mode phones)
  • Reduces dropped calls
  • Up to 1,000 sq. ft. coverage area or one room¹
  • Extends the life of your cell phone battery
  • Made in USA

System Includes:

  • 50dB wireless cellular amplifier (DA4000MR)
  • 12VDC power converter
  • Internal 9dB directional antenna
  • External 18” PowerMax 9dB antenna
  • 30' ULTRA low-loss cable for external antenna
  • 15’ ULTRA low-loss cable for internal antenna
  • 1”-14 threaded mounting ferrule
  • 1”-14 threaded mount
  • 90-Days Warranty

*Requires a minimum separation distance of 12’ plus a structure between inside and outside antennas (also see model DA4000, which requires no antenna separation).

* Increased range varies based upon height of outside antenna, type of cable used, cell phone carrier, and location of cell tower. For maximum range, place outside antenna as high as possible using our ultra low-loss cables.

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  • Model: DA-4KMR-30M
  • Manufactured by: DIGITAL ANTENNA