Product description Compatibility: This GPS antenna Compatible with the following GPS units: PIONEER AVIC-W8500NEX AVIC-X8610BS AVIC-5201NEX Features: Brand New 5 Meters Amplified Remote GPS Antenna Active Gain for better signal Built-in Powerful Low Noise Amplifier Magnetic Base Specifications: Dielectric Antenna Center Frequency 1575.42MHz3 MHz V.S.W.R 1.5:1 Band Width 5 MHz Impendence 50 ohm Peak Gain >3dBic Based on 77cm ground plane Gain Coverage >-4dBic at 90