Was browsing eBay and saw this thing. Convert A Tenna?
Radio input, antenna output, what is the third wire?
https://i.ebayimg.com/images/g/AyEAAOSwLt5es38Y/s-l1600.jpg
https://i.ebayimg.com/images/g/l7YAAOSwtMNes38c/s-l1600.jpg
Radio input, antenna output, what is the third wire?
https://i.ebayimg.com/images/g/AyEAAOSwLt5es38Y/s-l1600.jpg
https://i.ebayimg.com/images/g/l7YAAOSwtMNes38c/s-l1600.jpg