Message-ID: <002d01c3f7ee$7dba62f0$1f00a8c0@dellboy>
From: "Dave Pick" <dave@picks.force9.co.uk>
To: rsgb_lf_group@blacksheep.org
References: <000701c3f7a9$3efe6920$6507a8c0@Main> <002901c3f7e4$ef6b59e0$a71279d1@jsm> <Pine.LNX.4.58.0402201350140.3604@willow.nutstreet.net>
Date: Fri, 20 Feb 2004 20:16:57 -0000
MIME-Version: 1.0
Subject: Re: LF: Antenna Insulators
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Dear all.

I don't like pipe because water collects inside and it's amazing how far an
arc can track down a damp path!
If you do use it, seal the ends with silicone sealant (applied in a dry
place), that seems to work.

Dave G3YXM.

>
> > Has anyone had success using white PVC pipe (say ~ 1.5" dia) for
insulators?
> > I am wondering if a 12 -18" piece at the voltage ends of my flatop would
be
> > enough to prevent any flash-over?
>
> I am about to find out because I've built just such insulators for my
> flattop.  Mine are 2cm dia by about 35cm and have 9cm corona rings on
> each end.  I'll have pictures soon but are just like the ones Ralph W5JGV
> built as seen here:
> http://www.emachine.com/insulators/ring_finished_insulator.jpg
>
> That picture is from Ralph's page for these insulators which is here:
> http://www.emachine.com/insulators.htm
>
> The mast material for my flattop was delivered yesterday, so I hope to
> have WD2XFX back on the air by the time the weekend is over ... and I'll
> see how these insulators perform.
>
> Good luck,
> Eric
>
>