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RE: Topband: bn73 cores

To: topband@contesting.com
Subject: RE: Topband: bn73 cores
From: "CHARLES HUTTON" <charlesh3@msn.com>
Date: Fri, 22 Oct 2004 22:48:53 +0000
List-post: <mailto:topband@contesting.com>
Logan:

These cores are binoculars so there really isn't an opposite side.

Check out http://www.w8ji.com/core_selection.htm and scroll down to the bottom and you'll see a picture of a transformer wound for Beverages.


Chuck



From: "Logan Dietz" <cdietz@swbell.net>
To: "'Tom Homewood'" <w1to@adelphia.net>,"'linda doyle'" <ldoyle@gwi.net>, <topband@contesting.com>
Subject: RE: Topband: bn73 cores Date: Fri, 22 Oct 2004 13:49:38 -0500


Do you put the turns on the opposite sides of the core?

-----Original Message-----
From: topband-bounces@contesting.com [mailto:topband-bounces@contesting.com]
On Behalf Of Tom Homewood
Sent: Friday, October 22, 2004 7:37 AM
To: linda doyle; topband@contesting.com
Subject: Re: Topband: bn73 cores


Hi John,

Two turns on the primary and 8 or 9 turns on the secondary. 9 turns will
give you roughly 1012 for the secondary impedance.

Eight turns will give you 800 ohms on the secondary, so pick which ever is
closest.

73, Tom, W1TO

----- Original Message -----
From: "linda doyle" <ldoyle@gwi.net>
To: <topband@contesting.com>
Sent: Tuesday, October 19, 2004 9:15 AM
Subject: Topband: bn73 cores


gentlemen: several people have asked me what the winding data is for the
bn73 cores when it comes to building pennants and flag antennas if someone
knows would he or she please post it on this web I've never built either but
i'm sure someone who visits this site knows thanks John K1GUN.
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