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Severe radio interference when heated window switched on

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Darius:
My radio is normally fine - I listen to FM.

When I switch on the heated rear window I can no longer hear the radio because of all the interference.  I searched the forum for ideas and I have checked the connections to the heated rear window and they seem fine.  There are no breaks that I can see when I heat a misty window - all the horizontal elements heat up.  Were it a petrol car I would suspect suppression as being the problem but it is a diesel.  The interference doesn't seem to be related to engine revs.

Any ideas where I should look?  It's a 51 reg.

TheBoy:
Assuming saloon, due to symptoms....

It will likely be the 0v connections to the bodywork. Check both HRW and the aerial amp 0v (earth) to bodywork

Darius:
Thanks.  It is a saloon.  I'll have a look at the 0V (earth) connections and let you know the results.

Shackeng:

--- Quote from: Darius on 10 December 2018, 10:53:28 ---Thanks.  It is a saloon.  I'll have a look at the 0V (earth) connections and let you know the results.

--- End quote ---

Let us know as I have the same on my '51 3.2 saloon. :y

biggriffin:
I had the same on my last saloon, gave up drilled holes in roof and fitted a bee sting.

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