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Old 02-06-2005, 01:27 AM   #3
Jordan
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Join Date: Feb 2003
Location: MaxBimmer, home of Nazi's,
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I'm not sure about e46's but on e36's there is no "antenna"

There is a secondary matrix on the rear windshield. Looks just like a defroster matrix, but its sperate and serves as an antenna.

The signal from this antenna is sent through a preamp and signal booster prior to being sent to the stock deck which must also boost the signal.

Aftermarket decks in e36's I have worked on are NEVER nearly as good as the stock deck for FM reception.

But what do I know... I hate radio... I removed my antenna and welded up the hole
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