Spark arrester for AM radio reception, 850GLC

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Steven C. Perkins - 06 Jan 2007 03:45 GMT

Can anyone recommend a good spark arrester to use with the radio on an
850GLC, This is a unit with the CD changer in the trunk. I can only get
the most powerful AM stations with lots of engine noise.

Thanks,

Steven C. Perkins

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Baz - 06 Jan 2007 05:29 GMT

> Can anyone recommend a good spark arrester to use with the radio on an
> 850GLC, This is a unit with the CD changer in the trunk. I can only get
[quoted text clipped - 3 lines]
>
> Steven C. Perkins

Check that the antenna is "earthing" to the chassis properly. Remove the
antenna from the guard, and clean the metal underneath (on inside of the
trunk not the outside) of paint and rust, put a bit of grease on it if
you're worried about rusting, and re-install the antenna, making sure the
teeth at the underneath of the antenna bight into the metal properly. If
the earthing is poor you'll get lots of noise on AM.

Regards
Barry

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Michael Pardee - 06 Jan 2007 12:22 GMT

I agree with 'Baz' - the antenna ground is the most likely culprit. This is
the place to be a fanatic; make the metal shine and clamp the antenna down
firmly. I like to put a film of silicone grease on the bare metal before
reassembling.

Mike

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Steven C. Perkins - 07 Jan 2007 02:20 GMT

> I agree with 'Baz' - the antenna ground is the most likely culprit.
> This is the place to be a fanatic; make the metal shine and clamp the
> antenna down firmly. I like to put a film of silicone grease on the
> bare metal before reassembling.
>
> Mike

Thanks to Mike and Baz.

I'll check the antenna.

Steven

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