ConPus? GPS Antenna FAKRA-C for Volkswagen RNS 510 MFD3 500 315 310 300 RNS2 MFD2 GP-AC112 Amplified (active) GPS antenna to enhance and improve GPS signal reception. Built-in magnets for mounting on car rooftops or other metallic surfaces. Gain=28dB,RHCP,Z=50R, Center Frequency 1575.42MHz3MHz Threaded holes for mounting on aircraft fuselage, boat surfaces or car/RV/SUV vehicle surfaces. Length: 3m