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Author Topic: Severe radio interference when heated window switched on  (Read 3270 times)

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Darius

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Severe radio interference when heated window switched on
« on: 08 December 2018, 14:36:51 »
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.
« Last Edit: 08 December 2018, 14:39:19 by Darius »
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TheBoy

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Re: Severe radio interference when heated window switched on
« Reply #1 on: 08 December 2018, 18:07:36 »
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
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Darius

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Re: Severe radio interference when heated window switched on
« Reply #2 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.
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Shackeng

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Re: Severe radio interference when heated window switched on
« Reply #3 on: 10 December 2018, 17:13:09 »
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.

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

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Re: Severe radio interference when heated window switched on
« Reply #4 on: 10 December 2018, 21:48:55 »
I had the same on my last saloon, gave up drilled holes in roof and fitted a bee sting.
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Darius

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Re: Severe radio interference when heated window switched on
« Reply #5 on: 16 December 2018, 14:48:26 »
Quote from: biggriffin on 10 December 2018, 21:48:55
I had the same on my last saloon, gave up drilled holes in roof and fitted a bee sting.
I was thinking about using a coat hanger but so many are plastic these days.
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ronnyd

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Re: Severe radio interference when heated window switched on
« Reply #6 on: 16 December 2018, 17:26:53 »
Quote from: Darius on 16 December 2018, 14:48:26
Quote from: biggriffin on 10 December 2018, 21:48:55
I had the same on my last saloon, gave up drilled holes in roof and fitted a bee sting.
I was thinking about using a coat hanger but so many are plastic these days.
That,s just a style thing. ;)
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