Wilson Electronics Dual Band - 800-1900 MHz Magnet Mount Antenna with TNC Male Connector and 10-Foot RG174 Coax Cable Dual-Band & Tri-Mode: 800MHz & 1900MHz Analog and Digital Compatible with all Cellular, PCS and iDEN providers Easy to install Removable - easily transfers from one vehicle to another 10 to 15 times more signal than a cell phone used inside vehicle without an external antenna