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Shop radio and light interference

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redtom
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PostPosted: Wed Jan 30, 2013 2:50 pm    Post subject: Shop radio and light interference Reply to specific post Reply with quote

Got an old FM radio at work on my bench like most of us do. A month or so ago it cuts out to static on all but the in town station. tried all things then last night I figured it out. They installed one row of T-8? flourescent lights to replace big ole high pressure ones, with more to follow. Turn them off and radio comes in fine. Ran a wire through wall to outside and tried coax to it, but not better. Not a big deal, but I would like my music back. Even the vehicle radio's cut out when pulled in. Is there a filter or something I can use?
 
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Ted in NE-OH
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PostPosted: Wed Jan 30, 2013 2:52 pm    Post subject: Re: Shop radio and light interference Reply to specific post Reply with quote

Be sure your radio is not set to "AM" this is normal for "AM" and not "FM"
 
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redtom
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PostPosted: Wed Jan 30, 2013 3:02 pm    Post subject: Re: Shop radio and light interference Reply to specific post Reply with quote

I did say in OP "FM radio"
 
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DiyDave
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PostPosted: Wed Jan 30, 2013 3:41 pm    Post subject: Re: Shop radio and light interference Reply to specific post Reply with quote

Either your radio has a glitch, or something is not grounded right. I have a hypertherm plasma cutter, that will let me know I left it on, it will put a rhythmic clicking noise in my truck radio, when parked outside (AM or FM), and it will even fuzz the radio at the house, 300 feet away!
 
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jerry crow
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PostPosted: Wed Jan 30, 2013 4:11 pm    Post subject: Re: Shop radio and light interference Reply to specific post Reply with quote

I have the same exact problem. I just try to leave the lights off on that side whenever I can do without them.
 
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Hobo,NC
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PostPosted: Wed Jan 30, 2013 4:22 pm    Post subject: Re: Shop radio and light interference Reply to specific post Reply with quote


I use a car radio with a power converter,,, drill a hole thru the wall and mount a car antenna...
 
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Dave Sherburne NY
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PostPosted: Wed Jan 30, 2013 4:30 pm    Post subject: Re: Shop radio and light interference Reply to specific post Reply with quote

I use an old second hand computer. I can get stations from all over the country and the world no static whatsoever.
 
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Motorcraftman
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PostPosted: Wed Jan 30, 2013 4:48 pm    Post subject: Re: Shop radio and light interference Reply to specific post Reply with quote

I have the Two rows of Two bulbs each,T-8's in My Shop and The radio is OK on Both Am and FM??? I haven't the foggiest idea what could be your Problem... And I have an Electronics backgroung.. Hmm.. Larry
 
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JD PHIL
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PostPosted: Wed Jan 30, 2013 4:53 pm    Post subject: Re: Shop radio and light interference Reply to specific post Reply with quote

My FM does the same thing with lourescent lights on.
 
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Greg K
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PostPosted: Wed Jan 30, 2013 4:54 pm    Post subject: Re: Shop radio and light interference Reply to specific post Reply with quote

I have a similar problem that just showed up last month or so. I have two sets of lights and on one set it is 2 four bulb t-8 fluorescent lights and one 300 watt incandescent. On the other switch it is 2 four bulb t-8 fluorescent and 2 400 watt Metal Halide high bay lights. when I turn on the switch for the fluorescent/metal halide lights it messes with the radio, but when I turn on the other 3 there is no problem. I haven't worried since it is too cold to spend much time down there.
 
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MarkB_MI
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PostPosted: Wed Jan 30, 2013 5:47 pm    Post subject: Re: Shop radio and light interference Reply to specific post Reply with quote

I have six of eight foot T8s, 24 bulbs total. They don't interfere with my FM radio. I also have a four foot workbench light, which wasn't a problem until I had to replace its ballast. Now it interferes with the radio, so my conclusion is that not all ballasts are the same.

I should note that the workbench light is on the same circuit as the radio, while the main lights are on the opposite leg. You might try switching your circuits around so the lights and radios aren't on the same leg.
 
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redtom
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PostPosted: Wed Jan 30, 2013 6:13 pm    Post subject: Re: Shop radio and light interference Reply to specific post Reply with quote

I should add this is at work. The lights are up high probably 20ft, on their own circuit. The lights they replaced were 440v and these are in the same circuit so I can't say exactly what they are but 6 4ft bulbs in each and very bright. It even wipes out any vehicle fm when you pull in.
 
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504
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PostPosted: Wed Jan 30, 2013 7:02 pm    Post subject: Re: Shop radio and light interference Reply to specific post Reply with quote

Our shop radio started doing the same the day they installed the new lights,the radio works fine with the doors open(no windows)
 
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old_bc
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PostPosted: Wed Jan 30, 2013 8:44 pm    Post subject: Re: Shop radio and light interference Reply to specific post Reply with quote

The new lights may have electronic ballasts.
 
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Mark-Mi
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PostPosted: Wed Jan 30, 2013 9:28 pm    Post subject: Re: Shop radio and light interference Reply to specific post Reply with quote

Redtom, most did not read your post carefully about the part where it interferes in vehicles.
I have been all through this and researched on the web.
My trouble started when I replaced one T-12 8 foot fixture with a double tandem 4 foot T-8 fixture.
I used an extension cord tried every circuit in the shop, no good. Pulled pick-up in the shop, still buzzed in pick-up radio.
The problem is the ballast. The fixture I bought was a industrial model with a dual voltage ballast. 120-277 volt I believe. I replaced that ballast with one marked, residential use. The ballast is 120 volt only.Problem solved. Still cold starts fine.
I have read where a person used a outside antenna and it worked, but you said you tried that.
I think you are out of luck with that radio.
 
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