This is a multi-part message in MIME format.
--------------4EC63E32C4C
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
Next time you're passing by an AM-Broadcast transmitter site, walk
over to the tower and look at the protection used.
All it is is a pointed strap of copper or brass that has a small gap
to the feed. This gap is wide enough to not allow rf to jump, but narrow
enough to allow higher voltages to jump. The strap is then bonded
to the grounding system. Of course you would need two, one for each
feed conductor.
--------------4EC63E32C4C
Content-Type: message/rfc822
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
Return-Path: <owner-cq-contest@tgv.com>
Received: from Cone-Of-Silence.TGV.Com by alaska.net (5.x/SMI-SVR4)
id AA12827; Tue, 6 Feb 1996 08:48:14 -0900
Errors-To: owner-cq-contest@tgv.com
X-Listname: Amateur Radio Contester's discussion list <CQ-Contest@tgv.com>
Warnings-To: <>
Errors-To: owner-cq-contest@tgv.com
Sender: owner-cq-contest@tgv.com
Message-Id: <19767.9602061711@earl.encore.com>
To: cq-contest@TGV.COM
Subject: Surge suppressors for balanced feeders (summary)
From: Pete Soper <psoper@encore.com>
Reply-To: Pete Soper <psoper@encore.com>
Content-Type: text
Content-Length: 930
X-UIDL: 823628993.000
X-Mozilla-Status: 0001
Most folks pointed me toward ICE. Their model 309 (low-med power, $44) or
309H (high power, $72 in '94) 300-600 ohm balanced line suppressor is
available direct from ICE at 800-423-2666.
It doesn't appear that Polyphaser has anything, but email to one of
their consultants is pending and to see if there is something not listed
in their catalog.
One gentleman suggested the "pair of sparkplugs" setup. All other
considerations aside, I don't trust myself to set the gap properly!
Knife switches are "out there", somewhere :-)
Jerry's comments about what comes in the shack vs stays outside gets to
the heart of some hard thinking I've been doing since building the
ground window "inside". If it weren't for the balanced feeders, this
would all be so much easier. But this is for the next message.
Thanks to:
Patrick WB9IQI
Ken WM2C/6
Wade W0EJ
Gene K7DBV
Pete N4ZR
Waldek, DL7ANQ SO6ANQ
Jerry W4UKU
Regards,
Pete
KS4XG
--------------4EC63E32C4C--
|