GENERATORS
Submitted: Friday, Jun 11, 2004 at 09:19
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CHRIS
Does anyone know how to remove the static on the AM Band when running a radio on a generator.(you guessed it, it's a GMC). Does not occur on FM, but thats a bit hard to receive in the bush. Was thinking that maybe the static is coming from the plug side and it could do with a suppressor of some sort on the high tension side. Before you say buy a Honda etc, just a straight answer will suffice from some one with electronic know how.
Reply By: V8troopie - Friday, Jun 11, 2004 at 14:34
Friday, Jun 11, 2004 at 14:34
When you say "running on a Generator" I assume its powered by the genny, not just sitting on it?? :-)
You have to find out if the interferance comes in via the antenna or via the power lines.
First, power the radio from batteries and run the genny next to it. Still interferance? Its coming via the antenna and you have to fit some kind of spark noise suppressor to the genny's plugs.
Interferance only when powered from the genny? its coming through the power lines. Cure might be fitting the lines through a ferrite toroid ring (wind on as many turns of both wires as you can fit through the central hole). You can get these rings ad Dick Smith. Another fix is to fit a large electrolytic capacitor across the power lines at the radio end. Watch for the correct the polarity of the capacitor. I suggest try a 1000uF/25V rated one to begin, increase the uF rating if not fully satisfied with the noise reduction.
The above assumes you are talking about a 12V radio and not your priced mantelpiece set?? :-)
Good luck,
Klaus
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