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little to no FM reception....antenna or amplifier?

3815 Views 4 Replies 4 Participants Last post by  lashlee
Ok guys I swapped out the HK unit about a year ago, I had great reception with the factory radio but ever since the swap out to aftermarket Kenwood, the reception went in the toilet. I swapped out the speakers, HU and amp...sound is awesome, reception not so much.

A few things that I have tried:

- Yes the ant amp. is getting power
- I have tested all grounds and check out
- I am using the proper ant. adapter from Metra (tried two of them), even tried swapping pins.
- Am reception is pretty good, FM only gives me about 3 strong stations, the rest have static
- The strong stations have static when the car turns (90 degree turns)
- Have gone back to the shop and tried 2 other radios/brands, they had the same problem.
-If I disconnect the power from the ant amp. all reception goes away. If I disconnect the individual plugs from the rear window the reception barely changes.
- The closer I get to the antenna amp, the better the reception.
- Tailgate open improves reception, I have factory tint.
- Antenna leads/grid on window glass all check out for continuity.

Any thoughts or other methods of trouble shooting would be greatly appreciated. This is driving me crazy. Sound is fantastic from CD, Ipod, AM, but I miss listening to FM.

I have the factory service manual, but I can't seem to find how to test the actual antenna amp itself. Could it be that it just isn't working properly?
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· Registered
62 Posts
Your problem does seem to point to a bad antenna amp. Try disconnecting the antenna lead to the amp and connect it to an external passive antenna (i.e. could be a simple length of wire) and check reception. If it's good you have a bad amp, if not there is a problem in the cable.

Good luck.

· Registered
2015 2.5i Limited Carbide Gray
832 Posts
It could be many things, but I would look at the antenna adapter that you used first. In general the aftermarket puts less effort into making the tuner as good as the OEM's since generally you are buying a new aftermarket radio for one or many particular features not found in the OEM piece. I have a Kenwood in our OB and think that the tuner is decent, though its rare that I actually use it. Between the Sirius and iPod options I don't need the tuner.
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