More Details - Mobile Mark MM3-900/1900MU Glass Mount Antenna
Mobile Mark Glass Mount Antenna - MM3-900/1900MU. Dual band cellular/PCS Mini-Mark glass mount antenna uses a patented current-fed design which provides efficient through-glass coupling and excellent impedance matching. 3 1/2" whip with 2" diameter ABS plastic foot can be mounted on the front windshield, closer to the phone so less cable is used and wiring is simpler.