Home > Home & Office Cell Boosters > PowerMax™ 4KSBR-50U 60dB Gain Small Building Wireless Repeater System


Complete System: 4KSBR-50U


Increase cell signals indoors with Digital Antenna’s popular PowerMax™ Small Building Repeater. The complete 4KSBR-50U system is a professional grade wireless cellular booster that provides a generous coverage area of up to 5,000 square feet. Perfect for use inside where cell phone service is poor or non-existent, the 4KSBR-50U repeater system brings the outside cellular signal indoors.

DUAL BAND: Operates on 850 or 1900 MHz frequency bands (except Nextel or iDEN).

Industry Canada Authorization 4260A-DA4000SBR, Part Number DA4000SBR.

Application: Multiple rooms in a home, office, RV over 40', yacht or sailboat (up to 5,000 sq. ft.)
Range/Performance: Enhances multiple cell phones 15’ to 50’ from inside antenna *
Advantage: Wirelessly amplifies up to 20 cell phones in multiple rooms
Requirement: 40’ separation plus a structure between inside and outside antennas

* Range/Performance varies based upon outside cellular signal strength. A weaker outside signal results in a smaller inside coverage area. To increase inside coverage area, add an internal or external directional antenna.

4KSBR-50U System Includes:

  • 3 watt dual band 60dB gain cellular repeater (DA4000SBR) *
  • 18” external 9dB gain omni-directional antenna ( 288-PW )
  • Internal antenna with 6' cable ( 135-RD )
  • 50’ of DA340 cable for external antenna ( 340-50NM )
  • 12 VDC power converter ( DP515 )
  • 110 VAC power supply ( DP255 )

* Not sold individually; only available as part of a system.

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