HI all, I just installed a new aftermarket radio on my TT bluetooth, HD radio. etc but the radio mode fm, am. really sucks i have the aftermarket antenna conversion.. anyone with the same problem? and how did you guys fixed it. thank you

do you have the antenna adapter hooked into a 12V source?

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yes its connected to the red wire that powers my radio. I wonder if I should connect it somewhere else???

nah, that shuold be fine. I'd contact the manufacturer. It might just be a bad unit, because I just installed a kenwood in a beetle and that thing had decent reception even when neither the antenna or booster were connected. Don't know too much about the HD tuners thou. You might wanna throw a post in the car audio section of the forum. They'll know more than I can tell you.

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Did you bypass the bose amp? If you did the TT uses a powered antenna from the bose amp. If you don't have the remote signal going to the bose amp then the antenna will never get power and you will get a crap signal.

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TT 225 Silver/Black
Red calipers, Forge Black 007p, n75j, Autometer Pro-Comp UL Boost Gauge, 18x8's, Neuspeed Sports with Koni Yellows :-)

Sorry to resurrect this thread. But I too recently changed out my radio. I have the Bose Concert radio. When connecting my new headunit, I also powered the 12v line that goes into the antenna adapter. I didn't bypass the amp and yet my reception is horrible.

you have tints? sometimes that messes with it... also it messes around with my signal when i have the rear window heater on...

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What we do in life, echoes in eternity.

Check the blinker fluid.....

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I have exactly the same problem with my audi a6 -02. I just bought a Pionner p85bt and bought the 12v antenna adapter but the reception is reeally crappy with alot of noise. If i connect the antenna without the adapter i don't get any signal at all, but if i connect the adapter and plug it in to the remote (+12v) i can here 2 or 3 FM stations, but it sounds really bad when i'm driving the car? The radio worked just fine with the Audi concert OEM system. Any ideas?

Is it a alternator wine?? Like in park and u rev the engine the static gets louder with a winny noise to it??