>IV3PRK wrote:
>Very interesting question Dave...I was just wondering why I never saw any
>comments on this "new" receiving >antenna design. It has been published by
>KB7GF on QST Oct.2012 and on QEX Sept/Oct. 2012.
>It's quite different from the usual small loop types, flags,pennants, K9AY,
>etc...
>But contrary to these resistor loaded loops, which always want to work, this
>Shared Apex Loop looks like critical >and not so easy to build!
A fairly similar design, although quite a bit larger dimension, appeared about
10-12 years ago on the hardcoredx website. It was 6 triangle loops arranged on
a mast. Each loop 30 feet tall and 20 feet wide at the base, fed 60% from the
outer loop corners with 75 ohm coax through a binocular core transformer. The
six feedlines were routed to a phasing control box at the base of the mast. I
tried to build it in Oct. 2002 but could never get the phasing control to work
properly (I still have my notes). I scrapped the project and built the
8-direction K9AY instead. I am thinking of trying it out again next summer
using the KB7GF control circuit.
Steve KK7UV
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Topband Reflector
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