1. Frequency:GPS, FM/AM, DVB-T 2. SWR:<2:1 3. Impedance: 50ohm 4. Connector: SMA, ... : 470~862MHzFunction can do as GPS, FM/AM, TV, GSM, GS-218 with multi function. You can choose the antenna function ... or will be have in your car, you choose antenna GS-218, And only one antenna is ok, no need to ... . To make your car more functions and more beautiful, choose GS-218. dvb-t gps am fm antenna