Get more bars with the most powerful repeater system on the market. Digital Antenna's PowerMax™ 4KSBR-50M 70dB gain wireless repeater system boosts the signal strength of your cell phones or wireless broadband cards to 3 watts, greatly improves transmit and receive signals and can be used in a variety of locations. This translates into fewer dropped calls, clearer connections and stronger signals inside your home, office, yacht, sailboat or RV. In addition, Digital Antenna's cell boosters extend the life of your cell phone's battery. Not for use in open console boats.