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1. Topband: broadband transformer help please (score: 1): Author: Felipe Ceglia - PY1NB <felipeceglia2@gmail.com>; Date: Tue, 21 Jul 2009 09:18:45 -0300; Hi, I am about to make a pair of 3:1 (900:300ohm) transformers using a binocular core for a waller flag receiving antenna. The fact is that I only have one pair of similar binocular cores available a; /archives//html/Topband/2009-07/msg00084.html (8,187 bytes)
2. Re: Topband: broadband transformer help please (score: 1): Author: Greg - ZL3IX <zl3ix@inet.net.nz>; Date: Wed, 22 Jul 2009 21:14:23 +1200; The material permeability can be determined, but you will need to know the effective length of the magnetic path, and the effective cross section area. My guess is that you should be more interested; /archives//html/Topband/2009-07/msg00091.html (8,802 bytes)

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