We are offering gps active antenna. (i) dielectric antenna center frequency 1575.http://members.indianyellowpages.com/manage-products.php42mhz±3 mhz v.s.w.r 1.5:1 band width ±5 mhz impendence 50 ohm peak gain >3dbic based on 7×7cm ground plane gain coverage >-4dbic at more...