antenna setup in 1991 100

["Mark McCulley" <audicar99@hotmail.com>]

Hi all,

I recently purchased my first Audi, a 91 100 and am really pleased to 
find a community of Audi folks to help me maintain it. I've owned (and 
still do own) several Volkswagens over the years, so the basic zeitgeist 
of these fine automobiles is not entirely alien to me. However, I've 
never encountered a vehicle with two antenna systems for the radio. Is 
one of the antenna connections perhaps for the RDS system?

Here's my problem. The previous owner recently purchased an aftermarket 
radio after the original died of the dead volume knob ailment. The 
installers of the new radio really messed things up and I think I have 
finally gotten the system to pretty much operate properly. The only 
remaining problem is that the radio reception, especially AM, is not as 
good as it should  be. The reception did improve a lot after I connected 
the remote power leads (4 white wires) for the rear amplifiers (mounted 
on the speaker housing). I think some of the leads were for the antenna 
amplifiers, but I can't say for sure. Before hooking up these wires I 
couldn't receive AM at all.

Should I expect the Audi's antenna, which is in the rear glass I think, 
to perform as well as a "normal" antenna that is external to the 
vehicle?

Mark McCulley


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