DA4KSBR-50U: Digital Antenna Dual Band 60dB Amp Kit. 824-894/1850-1990 MHz 60dB, variable 3 watts Dual band cellular/PCS wireless in-building repeater/amplifier kit. Includes amplifier/repeater, 12 VDC power converter, 110VAC power supply, inside omni-directional antenna with 6' cable, outside 9 dB omni-directional antenna with mounting bracket, 50' coaxial cable with attached connectors. Digital Antenna's PowerMax dual band in-building amplifier/repeater increases signal strength and improves cellular communication without a physical connection to the cellular phone. Complete in-box package includes everything for home or small offfice. Amplifies 800 and 1900 MHz bands Use multiple cell phones and carriers at the same time Dynamic variable gain control up to 3 watts output power Reduces dropped calls Extends the life of your cell phone battery Mini UHF female connectors Adequate outdoor signal strength of -70 to -90 dBm is required for optimum system performance. Requires mimimum separation of 40' between the inside and outside antennas Complies with FCC, IC, UL rules, regulations and codes. Wireless ? no connections to cell phone Increases cell phone range up to 50+ miles Amplifies 800 and 1900 MHz bands Use multiple cell phones and carriers at the same time Reduces dropped calls Up to 5,000 sq. ft. coverage area Extends the life of your cell phone battery Stay Connected ... Wirelessly! This requires no physical connection to your phone. How does this work? An outside antenna receives the signal from the cell tower, the signal is amplified by the unit and repeated to your cell phone through the inside antenna. No physical connection to your phone means you now have the freedom to walk around while talking on your phone. This technology even allows clean and clear wireless functioning of multiple cell phones operating on 800 and 1900MHz bands simultaneously (coverage area up to 5,000 square feet). Complete Systems are Easy to Install Unit is sold as a complete system with everything you need for no hassle installation on your yacht, or inside your RV, home or office. This innovative design offers patent pending Dynamic Variable Gain control and amplification of transmit and receive signals. A minimum separation of 40' is required between the inside and outside antennas*. For use with all cell carriers in the USA and Canada, including Cingular, AT&T, Verizon, Sprint, Alltel and T-Mobile.