A/F gauge stuffed my reception

darky82 · Post by **darky82** » Sat Oct 05, 2013 9:47 am

Hi all been a while, after putting up with what I thought was just a dud aerial turns out to be my innovate a/f a gauge putting major static through my stereo.
Is a simple stereo filter box a simple solution I sure the stereo has one on it. I've never had to deal with this problem before?

Post by **VL400** » Sat Oct 05, 2013 9:58 am

Had the same problems with radio static and an mtxl, ended up just using a small ferrite bead (from an old TV I think it was) around the power feed near the gauge. No more static and the scope showed a massive reduction in spikes on the 12v power wire.

darky82 · Post by **darky82** » Sat Oct 05, 2013 10:08 am

Mmmm Ferrite bead hey, if I got to jar car will they know what I'm talking about?
Thanks for the quick reply.
Is this one here like you used?

Post by **yoda69** » Sat Oct 05, 2013 10:25 am

Should do, heaps of options:
http://search.jaycar.com.au/search?w=ferrite&view=list

darky82 · Post by **darky82** » Sat Oct 05, 2013 10:30 am

Great thank you, appreciate it.

Post by **VL400** » Sat Oct 05, 2013 10:40 am

I used one like LF1294 but something like LO1238 also works. Just wrap the wire through a couple of times.

Post by **vlad01** » Sat Oct 05, 2013 10:41 am

I get massive interference from the factory cruise control.

putting huge load on the charging system seems to fix my problem, i.e. holding down electric window buttons or having all lights and demister on works lol.

can add a capacitor to the radio power feed should fix it. common factory fix on many old cars.

A/F gauge stuffed my reception

A/F gauge stuffed my reception

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