RE: Neon Sign Noise

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Duke, Ronn (CCI-San Diego CCC) by way of Terry Fritz <twftesla-at-uswest-dot-net>" <Ron.Duke-at-cox-dot-com>

Ed,
Your phone problem is not unique. You can have the phone co. come and put
shunts on your phone to eliminate RF noise, (i.e. nearby radio stations,
etc.), and electrostatic interference. (Usually a free service.) You might
try a cordless phone, and try moving the base to another part of the room,
or go to a 900mhz. phone. Hopes this helps. 

Keep on coilin',
Sparky


	-----Original Message-----
	From:	Tesla list [SMTP:tesla-at-pupman-dot-com]
	Sent:	Wednesday, January 24, 2001 10:43 AM
	To:	tesla-at-pupman-dot-com
	Subject:	Neon Sign Noise

	Original poster: "by way of Terry Fritz <twftesla-at-uswest-dot-net>"
<Esondrmn-at-aol-dot-com>

	Well, I hope Terry will let this pass.  It is not exactly on topic,
but does 
	involve neon sign transformers.  Please reply off line to me if you
have any 
	ideas.

	I recently moved my business (Yamaha golf car dealership) into a new

	building.  It has really cool neon tubing that runs around the
showroom about 
	8 feet up off the floor.  It is broke up into about 4 sections that
each have 
	a 12 kv 30 ma neon sign transformer installed in the ceiling for
power.  This 
	is the first time I have owned any neon sign transformers that are
actually 
	doing what they are designed for.

	One section of the neon is right above the parts counter and the
neon causes 
	a lot of 60 HZ buzzing in the telephone that is sitting on the
counter.  I 
	want to get rid of this annoying buzzing in the phone.  If I shut
the neon 
	off, it goes away.  The phone is a standard two line phone with an
intercom.  
	I unplugged the ac power supply to the phone and the problem is
still there.  
	I tried plugging in the phone line to a different jack located about
40 feet 
	away.  When the phone is brought over to the counter which is about
4 to 5 
	feet below the neon, the problem returns.  As you move the phone,
the buzzing 
	intensifies as it gets closer to the neon and goes away when the
phone is 
	moved about 10 or 12 feet away on a straight line.  I tried using a
1.5" 
	diameter ferrite core and looping the incoming phone line through it
a few 
	times and also tried it on the cord to the handset - neither did
anything to 
	reduce the noise.

	Anyone have any ideas?

	Thanks, Ed Sonderman
	Esondrmn-at-aol-dot-com