Bit of a thread resurrection here, but my car was off the road for many years until recently. And the aerial (or lack of reception) is my penultimate issue left to fix.
I had very poor reception when I swapped to this kit but couldn't figure out why at the time. Then looking at it closer now I have 2 queries and am hoping someone that is a whizz with electronics and car electrics can enlighten me.
1) The base unit is amplified, but for that to work you need to complete the electrical circuit, first by connecting the red wire to power, but also the base of the unit needs to be grounded, hence the metal base. On a stock install would be when it's bolted to the body of the car. But with this install it's not. So the base units amplifier will never work?
2) What is connected to ground and to the entire car body is the mast, as the extension via the bracket is grounded to the car. But surely this shouldn't be grounded and would cause all kinds of interference and signal issues? The mast should be totally isolated to avoid interference?