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  Topic Review (Newest First)
2018-06-05 07:12 PM
holl_ands Need specific mfr & part numbers....
Are the 48-in T8 Fluorescent Tubes in a METAL or non-metallic Fixture????
2018-06-03 12:20 PM
Electric-al I left the light switch alone, but changed the lamps from T12 to T8. I will try an LED fixture instead since we have been phasing out magnetic ballasts and T12 lamps in Canada for many years now. Thanks for the idea of a filter, I will check into that also.
2018-06-02 10:47 PM
ExDilbert It may be better in the long run to obtain the radio signal elsewhere. Depending on the location, satellite or internet may be suitable alternatives.
2018-06-02 10:35 PM
holl_ands It might help if you provide DETAILS of what you now have....did you ALSO add a KNOWN COMPATIBLE LED Dimmer....which MAY be the source of EMI instead????
2018-06-02 07:03 PM
majortom what made you replace the ballast in the first place?
if it was defective or somethin, I would replace it like for like,
or get a new fixture altogether.

I have numerous antique AM radios, and none of them are affected by the flourescent overhead fixture in the 'junk room'
where they live.
2018-06-02 07:02 PM
ExDilbert Fluorescent light fixtures have always been a source of EMI. It's best to avoid them completely if EMI is an issue. The electronic ballast probably just increased the level or changed the frequency of the EMI being produced.

Filters, chokes or shielding may make an improvement or maybe not. The tubes may be emitting interference, in which case the entire fixture would need to be shielded.

I would try a halogen or LED fixture. LED fixtures have power supplies but they are designed and operate differently and at different voltages. If it is the tubes emitting the interference, an LED fixture will remedy that. Halogen is another option but they are significantly more expensive to operate than LED.
2018-06-02 03:44 PM
holl_ands Since you KNOW that it's the new Electronic Ballast, why not return it for a refund and buy something DIFFERENT???

You COULD try a clamp-on Ferrite Filter over the AC Power Lines feeding the Fixture....which may or may NOT work:

A truly EFFECTIVE Filter would be something like the following for $12+s/h [dash-6 is 6A per spec sheet, catalog sez 12A which I think is in error], which would need to be mounted inside the (hopefully METAL) light fixture and wired in-series with the internal AC Power sure to minimize the internal length of AC Power Lines going into the Filter [you can also get Filters that mount in a HOLE in the Metal Fixture...just like a PC...but its more difficult to use a PUNCH Tool...or CUT the right shape hole]:

I didn't know the Current Draw for your light fixture(s) you might want to also search other Electronic Catalogs, such as Allied....
2018-06-02 11:01 AM
FM Radio Interference - British Columbia

So we have a condo on the main floor in Elkford BC (near Fernie) and the nearest FM radio station is Lethbridge AB which is 212km (132 miles) away. The town is in a mountain valley with one mountain range in between. So we have been using just an old "ghetto Blaster" type radio with an extending antenna and normally the reception is decent. I recently changed the magnetic ballast to a electronic ballast in the kitchen flourescent light fixture. The electronic ballast is causing the radio to buzz, when I turn off the kitchen light the radio immediately works fine.
Is there any way I can remedy this? I was thinking of putting up a new light fixture in the kitchen, but then it has an LED driver inside it and I am assuming it will not make any difference.
Please advise

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