Superbat DAB/DAB+/GPS/FM Car Digital Radio Amplified Aerial Roof Mount Antenna for  Alpine Ezi-DAB Specification DAB Frequency:170MHz～240MHz (Band III) 1452MHz～1492MHz (L-Band) Impedance :50 Ω Amplification：20dB VSWR:≤2.0:1 Connector :FAKRA"G" Male Power Supply:+12v Cable:30cm RG174 GPS Frequency:1575.42MHz Impedence :50 Ω Amplification:28±3db VSWR:≤1.5:1 Gain:32dbi Connector: FAKRA“C” Male Cable: 30cm RG174 FM Frequency:87.5-108 MHz Impedence : 50 Ω Amplification:20dB VSWR:≤2.5:1 Connector:FAKRA"B" Male power Supply:+12v Cable: 30cm RG174 Voltage : 12v direct feed for both DAB an FM Current Consumption : 50mA Package Included:30cm DAB/FM Car Aerial with GPS Advantages: Very neat and stylish. Roof mount DAB car radio aerial. No need to unscrew mast for carwash, etc. Can also be fitted to wing, boot lid etc. (at slight expense of performance) Vandal resistant. Amplified Listing Suitable for the Following DAB Radios: Alpine Ezi-DAB pure Highway 300Di Cautions: DAB / FM / GPS only. FM reception good, but not up to a top quality, full rod aerial. Not designed for AM reception; will nevertheless receive strong MW signals. Mounting surface must be flat to within 1.5mm. Must not be mounted on a panel whose underside is exposed to the elements. Max panel thickness: 2.5mm