Our Cellular Signal Enhancers are wireless, meaning there's no physical connection between the system and your cell phone so you can easily move around a room. It works with all current carrier protocols simultaneously including: Analog/AMPs, CDMA, TDMA, GSM at 800 & 1900 MHz and iDEN at 851 MHz. The system is also compatible with Bluetooth hands-free devices. It includes a bi-directional amplifier which will receive gain in both transmit & receive paths, it automatically recognizes the carrier's protocol.

Our Cellular Signal Enhancer works with all wireless data networks, including GPRS/EDGE/EV-DO. It will dramatically increase your wireless data throughput by improving your signal strength adn reducing interference, meaning improved connectivity and faster downloads! Its automatic gain control of both the uplink and downlink paths and patent pending ADAPT technology prevent any external oscillation due to antenna installaion variations.

Features Wireless - No physical connection to phone Compatible with all cellular service providers Increases signal strength up to 10 times Reduces the number of dropped calls Increases call clarity Extends cellular range for voice and data Systems cover up to 500 sq.ft. or 2,500 sq.ft. Systems can be self-installed or professionally Compatible with Bluetooth hands-free devices Phone operates at reduced power level, increasing battery life while minimizing radiation Operates with multiple phones simultaneously Meets QS9000/ISO9001 quality standards Compatible with all wireless data cards Designed & Manufactured in the USA	Specifications Frequency: TX: 824-849 MHz / 1850-1910 MHz >< RX: 869-894 MHz / 1930-1990 MHz Gain: Up to 65 dB (auto ranging) Noise Figure: 8 dB (uplink/downlink) Input/Output VSWR: <2:1 Rated Output Power: Up to +20dBm Supply Voltage: 110VAC/60Hz Supply Current: Operating: 1.5A max / Idle: 700mA typical FCC Type Acceptance: OEU8001900-1A under rules par 22 & 24 Amplifier Dimensions: 5.33" (L) x 4.55" (W) x 1.19" (H) Window Antenna Directional Dimensions: 8.3" (L) x 7.1" (W) x 1.7" (H) Gain: 7dBi Weight: 1.4 lbs Antenna Omnidirectional Dimensions: 3.3" (H) x 6.5" dia. Gain: 3dBi Weight: 0.7 lbs
*The Sigma Auto Mobile Amplifier / Repeater has a better receiver than what's in your cellphone. Its advanced electronics are very sensitive and able to receive small signals which would go undetected by most cellphones. It also has a better transmitter with double the power of your cellphone. This allows your voice to be heard by distant cell sites, increasing coverage up to 50 miles or more. **A cellphone using our amplifier is safer and will use less battery power because the phone thinks it's much closer to a cell site than it actually is. Phones vary their power output based on their proximity to cell sites. Therefore, your phone transmits less power - resulting in safer use and longer battery life.