Hello out there! I need your help with the design of 2 baluns. I have read
and searched and dug up everything I can find on baluns and I am struggling
with the understanding of how I physically get from the schematic diagram
design to the build of the actual unit. I can not get my head around
converting the diagram into a actual core with coil windings. Things just
don't jive. Example: In 21st Edition of ARRL Antenna Handbook, p. 26-16, Fig.
22 Shows a schematic for a "Four winding, broadband, variable impedance
transformer." I think I understand the drawing but I am sure I am missing
something. I know I do not understand the numbering of points in Fig. 22.
Fig. 23 Shows a picture of the same thing actually built and then states:
"There are 10 quadrifilar turns of #14 enameled wire on a Q1, 2.5" OD ferrite
core." I think I understand the words in the statement, BUT I can not get a
"10 turn winding" from the Fig.22 diagram. I just can't see how you get fron
Fig. 2
2 to Fig. 23. All I want to do is build 1 each 9:1 (50 to 450 ohm balun) and
1 each 16:1 (50 to 800 ohm balun). Any coaches out there? Need your help.
Thanks very much
Mike seabassm01@hotmail.com
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