ok here is a pic of the regular non magnetic antenna mounted.
You cant see it, but there is a plastic insulator that keeps teh antenna signal (+) from connecting with the ground (-). thats what i mean by grounded. you cant have the two interfiering with eachother or else you complete the circuit. the best way i can think to explain it is that picture yourself sending out a + signal. Someone else has their antenna ground (-) to complete the circuit. clear? Im not an expert by any means so any one else feel free to chime in.
here is an example of a magnetic mount antenna.
pretty straight forward on that one...
