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Re: [TowerTalk] Static Discharge Wicks

To: "'towertalk reflector'" <towertalk@contesting.com>
Subject: Re: [TowerTalk] Static Discharge Wicks
From: "K1TTT" <K1TTT@ARRL.NET>
Date: Fri, 04 Sep 2009 10:51:42 +0000
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
Not for corona noise, that is from the tips and pointy spots and has nothing
to do with current flowing to ground... in fact it is current flowing 'from
ground' so the high impedance to ground won't help.  This type of noise
occurs even on completely dc grounded construction.


David Robbins K1TTT
e-mail: mailto:k1ttt@arrl.net
web: http://www.k1ttt.net
AR-Cluster node: 145.69MHz or telnet://dxc.k1ttt.net
 

> -----Original Message-----
> From: jimlux [mailto:jimlux@earthlink.net]
> Sent: Friday, September 04, 2009 03:12
> To: GALE STEWARD
> Cc: towertalk reflector
> Subject: Re: [TowerTalk] Static Discharge Wicks
> 
> GALE STEWARD wrote:
> > Time for a new thread!
> >
> > I ran across this the other day. Apparently these devices are used all
> the time on aircraft.
> >
> > http://www.repeater-builder.com/antenna/static-buster/buster.html
> >
> > Click on the "ELECTROSTATIC RECEIVER NOISE as a PDF file" to view an
> article on how these devices can be used on antenna systems.
> >
> > 73 Stew K3ND
> >
> 
> a high (RF) impedance bleed to ground can also help, as will avoiding
> "pointy" ends to elements.
> 
> Aircraft have a particular problem with p-static because they are
> isolated from ground, so charge can accumulate on the plane until the
> field exceeds the breakdown for air at sharp corners.
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