[RFI] Neon signs?

[Hare, Ed, W1RFI]

Hello, Ed

You offer.

> The ARRL's "RFI: How 2 find it & fix it" book has a fix for 
> Neon signs and it's not ferrites!  

Thanks for the accolade.  A lot of people worked hard to make that book
happen. Thought I would mention that "The ARRL RFI Book" is the sequel to
that book. For info, see:

http://www.arrl.org/catalog/6834/.

The "RFI Book" has some important new chapters (Cable TV), some major
revisions to older material (the Electrical chapter was written by a
troubleshooter for Northeast Utilities) and has added the FCC information
and the "consumer pamphlet"  -- info for the neighbors of hams with RFI
problems.

As with most ARRL books, it was put together by a number of people with
practical experince, not just the HQ staff with cute calls. :-)

73 from ARRL HQ,
Ed Hare, W1RFI
ARRL Lab
225 Main St
Newington, CT  06111
860-594-0318
w1rfi@arrl.org
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> -----Original Message-----
> From: EDWARDS, EDDIE J [mailto:eedwards@oppd.com]
> Sent: Tuesday, January 11, 2000 11:25 AM
> To: rfi@contesting.com
> Subject: RE: [RFI] Neon signs?
> 
> 
> 
> Okay, I should've looked this up first!  
> 
> The ARRL's "RFI: How 2 find it & fix it" book has a fix for 
> Neon signs and
> it's not ferrites!  The ARRL's RFI books are excellent 
> resources for many
> EMI problems.  I highly recommended that everyone add one to 
> your library.
> 
> The fix calls for an AC Line filter mtd directly at the 
> sign's transformer,
> and also resistors (10-Kohm, 1-W) in series with each high 
> voltage lead to
> the sign.  Also, they mention ensuring a good ground 
> connection for the
> transformer case.  This is probably missing in many 
> installations.  A 3-to-2
> prong adapter, if used, would eliminate the needed ground.  
> 
> Lastly they suggest for tough cases: try winding thin magnet 
> wire around the
> neon tube along it's entire length (6 or 7 turns per foot) 
> and ground at
> each end.  
> 
> An electrician should probably do most if not all of the above work
> (especialy that last one!).
> 
> 73, de ed -K0iL
> 
> > -----Original Message-----
> > From:	EDWARDS, EDDIE J [SMTP:eedwards@oppd.com]
> > I don't have any experience with neon signs.  I'd start by 
> contacting the
> > owners and find out who is the manufacturer of the signs.  Then try
> > calling
> > the mfr for some help.  They may have a fix they can send 
> out to the shops
> > using their signs.
> > 
> > 
> 
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