CF,
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Most likely one of these two Reference Links/URLs :
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Fabricating Impedance Matching Transformers for Receiving Antennas
- - - May 2001 by Paul Bryant
http://members.aol.com/DXerCapeCod/z_transformers.pdf
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Impedance Matching Transformers for Receiving Antennas
at Medium and Lower Shortwave Frequencies
June 2003 by Bill Bowers, John Bryant and Nick Hall-Patch [VE7DXR]
http://radiodx.com/spdxr/media/imt_doc1.doc
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BALUN READING LIST - (First Draft) :
http://groups.yahoo.com/group/Shortw...na/message/337
http://groups-beta.google.com/group/...4779c94ac46fe0

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iane ~ RHF
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All are WELCOME at the Shortwave Listener (SWL) "Antenna Ashram"
http://groups.yahoo.com/group/Shortwave-SWL-Antenna/
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Some Say: On A Clear Day You Can See Forever.
http://groups.yahoo.com/group/Shortw...na/message/502
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I BELIEVE: On A Clear Night . . .
You Can Hear Forever and Beyond, The BEYOND !
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With the a Shortwave Listener SWL Antenna of your own making.
[ If You Build It {SWL Antenna} You Will Hear Them ]