So its a FM musicstation?
Than the design in the article is a simple solution. It is horizontal polarised instead of your car antenna which is vertical polarised.
The horizontal placed antenna works like a directional antenna so you can point it to the station for the best reception:
&n bsp;X (station)
---------------- (your antenna (horizontal placed))
&n bsp; |
&n bsp; |(lead to your radio(vertical placed))
&n bsp; |
&n bsp; Y
Making the lead multiple lengths of 30 inches (30,60,90..) improves things too, but keep it as short as possible.
Edit: the spaces are gone grrrr, working on it.
Fixed!!!