[TowerTalk] Interference from Fluorescent Lights?

[John Brosnahan]

At 03:24 PM 8/18/97 -0400, Bill Coleman AA4LR wrote:
>On 8/18/97 0:39, Herb Rosenberg at herbr@netcom.com wrote:
>
>>I am planning on moving to a new QTH, and the ham shack will be located 
>>in a finished room built behind the garage of this house.  This room 
>>already has several overhead flourescent light fixtures, and they are 
>>all hanging in a suspended actoustical tile ceiling.  


The amount of RFI produced by fluorescent fixtures is closely
related to the quality of the ballast transformer and therefore to
the price.  Good quality fixtures usually don't emit enough RFI
to be problemmatic.

But Advance Transformer Co.,  2950 N. Western Ave, Chicago, IL
makes RFI filters in addition to ballast transformers.  I bought a
quantity about six years ago that I have not yet used (no, I don't want
to sell them).  The fixtures just never generated enough RFI to notice.
The filter is in a box that looks like a ballast but about half as long.
Seems like they cost less than $8 back then--no idea what they
cost now.  They are designed to wire into the fixture just after 
the ballast.  Their part number is RIF-1 (not RFI-1--probably stands
for Radio Interference Filter).  They are specified to handle 4.25 amps.

Hope this helps anyone with problems--guess I was just lucky!

73  John  W0UN


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