I’m cooking up my first 4-square using a set of elevated radials.
Is there a consensus on what the optimal way of laying out the radial pattern
is?
If the radials are spread out on the 0/90/180/270 points, we have overlap
between each of the radial center points (the 180 degree radial on the top
vertical overlaps with the 0 degree radial on the bottom, for example).
In the ON4UN book, a good diagram of the bonded and trimmed variety is shown
for the ground mounted. But for elevated, he suggests alternating the radials
on each vertical with a 45 degree rotation. Unfortunately his drawing is only
for 2 verticals. If you expand his layout, all of the vertical radials are
clear except for the pair which bisect the diagonal centerline and thus
overlap. In addition, the center is where the control box is going to have to
be as well - so that puts the radials with their attendant significant currents
in close proximity to the phasing lines and box.
In Rudy’s QEX he goes into the reduced sensitivity to symmetry associated of
using 8-12 elevated radials per vertical. But for the more simple 4 per
vertical case, I am looking for what the proper routing method should be to
optimize the symmetry of the 4 square.
Thanks!
73/jeff/ac0c
www.ac0c.com
alpha-charlie-zero-charlie
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UR RST IS ... ... ..9 QSB QSB - hw? BK
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