[R-390] RF Noise

Glenn Little WB4UIV glennmaillist at bellsouth.net
Sat Dec 22 15:24:55 EST 2012


The neon lamp is a good RFI generator.
The crimps can be eliminated by solder, but, this is most likely not 
the source of the interference.
The glow in the neon lamp is an ionization of the gas between the two 
electrodes.
This ionization is the source of wide band RFI.
In 1998 a patent was issued to OSRAM Sylvania for a RFI shield for a 
neon lamp to be used in an automobile.
You might can reduce the interference by bypassing the neon lamp with 
capacitors on either side to ground.

73
Glenn
WB4UIV



At 02:35 PM 12/22/2012, Steve Hobensack wrote:


>  Yes, it's usually caused by a crimp/loosened connection; there is 
> a series resistor that can change value.
>Steve N8YE
>
>
>
> > Date: Fri, 21 Dec 2012 20:48:02 -0500 (EST)
> > From: lasavidge at aol.com
> > To: R-390 at mailman.qth.net
> > Subject: [R-390] RF Noise
> > Message-ID: <8CFADFD8317F525-1D20-40C90 at webmail-m083.sysops.aol.com>
> > Content-Type: text/plain; charset="us-ascii"
> >
> > Evening: Has anyone ever experienced RF noise being generated 
> from the neon lamp used in a AC Outlet strips. Non Surge type. Just 
> a simple switch --lite by an internal neon lamp when power is applied? Tnx Lee
>
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