Product description Compatibility: This GPS antenna Compatible with the following Kenwood GPS units:DNX5140DNX5160DNX5180DNX5190DNX520VBTDNX5210BTDNX521DABDNX521VBTDNX5220DNX5220BTDNX5230BTDNX5230DABDNX5240DNX5240BTDNX5260BTDNX5280BTDNX5360DNX5520DNX570HDDNX570TRDNX571HDDNX572BHDNX575SDNX576S Features: Brand New 3 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