QFH
Introduction
Matching
Simulations
Dimensions
Groundplane
Related:
Simple helicoidal
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Jean-Jacques made this 70cm-band version with the same 10mm diameter
tubing as his 145 MHz version. The result is a very solid construction,
but the impedance was probably much too low.
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The connections didn't fit in the same connection box, and are made inside the vertical support tube. |
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ON7EQ has certain aptitudes for soldering!
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| (c) John Coppens ON6JC/LW3HAZ |