Product description Compatibility: This Antenna Compatible with the following GPS units: Boss BV9370NV BV9380NV BV9386NV Planet Audio PNV9680 Features: Brand New 3 Meters GPS Antenna Active Gain for better signal Built-in Powerful Low Noise Amplifier Magnetic Base Specification: Dielectric Antenna Center Frequency 1575.42MHz±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 –90°