It's fairly easy to remove the braid
from rg-58 or rg-8 and slip it over 5mm
silicone wire, still flexible and safer.
Paul
PAUL HEWITT
WD7S PRODUCTIONS
QRO HOMEBREW COMPONENTS
http://wd7s.home.att.net
-----Original Message-----
From: owner-amps@contesting.com
[mailto:owner-amps@contesting.com]On
Behalf Of Steve Katz
Sent: Tuesday, November 20, 2001 9:50 AM
To: 'Roger D. Johnson'
Cc: 'amps@contesting.com'
Subject: RE: [AMPS] HV connectors
> Hi Steve...
>
> I've used the silicone stuff many
times in high power LORAN
> transmitters. What you say is true but
I've also seen the
> insulation get cut exposing the HV to
the unwary. As I said
> I would much rather have the HV arc to
the shield than to me!
> An MHV with RG-59 should easily handle
most amateur setups.
> My L7 only runs about 2700 volts
unloaded. Most amps seem to
> be in the 2000 to 3500 volt range. The
guys with 4-1000's at
> 6-8 kv obviously need something a bit
more robust. Perhaps an
> HN type connector.
[Steve Katz] Hi Roger! Whatever
floats your boat...but I wouldn't
use RG59 for 2700V, it's kinda pushing
the limit. Polyethylene is a good RF
dielectric but doesn't have a high DWV,
and it gets worse after you solder
to its inner conductor (crimping is
better), giving the center conductor a
chance to shift inside the soft, nearly
molten polyethylene. Another writer
spoke of RG400, which, although
expensive, is a better choice. Its
dielectric is Teflon.
WB2WIK/6
> 73, Roger
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