This car roof top shark fin antenna is a multifunctional device that combines GPS, DAB, and FM/AM antenna applications. It is designed for car top roof thru hole mounting and comes with a 5-meter antenna adapter cable and signal amplifier power supply cable. The antenna is suitable for genuine navigation systems and in-dash DAB digital radio tuners. It has a working voltage of DC 9V-16V and a working current of ≤60mA. The DAB frequency range is 170MHz-240MHz (Band III) and 1452MHz-1492MHz (L-Band). The FM/AM frequency range is 522-1710KHz (AM) and 87.5-108MHz (FM). The output gain is 18dB±3dB (Band III), 8dB±3dB (L-Band), 13±3dB (AM), and 16±3dB (FM). The output impedance is 50Ω and the V.S.W.R is ≤2.5:1 (FM/DAB). The noise level is ≤3dB (FM/DAB) and the cable length is 5 meters. The cable connector is Fakra B White Female/Jack (FM/AM Radio) and SMB Plug/Male Right Angle (DAB Digital Radio). The GPS navigation antenna specification includes a working voltage of DC 3V-5V, a working current of 10mA≤I≤30mA, and a frequency of 1575.42±1.023MHz. The output gain is 28dB±3dB and the output impedance is 50Ω. The V.S.W.R is ≤2.0:1 and the noise level is ≤1.5dB. The packaging list includes 1 x antenna (including mounting nut).