Te-4101P23 Cell Phone Atenna Signal Booster Repeater Amplifier 1900 MHz The Booster designed to boost signal strength and ensure reliable coverage for cell phones, no more drop calls or experiencing poor cell phone call ALC ensure output level stable and adjustable continuously. With the amplified linear power, the intermodulation and and spuriousness are suppressed effectively. Compact design, to easy or and convenient installation. To expand signal coverage and resolve to signal blind area where signal weak or unavailable, such as home, office, public area etc. Works with any wireless operator on the frequency of1900MHZ PCS System