Topband: Another non-traditional antenna working.

[W0UCE]

Top Banders:

Further to Guy's report, N3ND's Inverted U Antenna is the third operational
Top Band Antenna employing K2AV's Folded Counterpoise(FCP)versus raised or
buried radials. The other two are Inverted Ls with FCPs at K2AV and W0UCE. 

After downsizing to a small QTH with limited space for a Top Band antenna I
expected my Top Band days were over.  Not the case... My inverted L vertical
section is only 46.5' but results have been good to include working JA, ZL
and VK.  The same antenna is used on 80 meters with ten 25' buried copper
radials and a matching network designed by Guy. Switching bands is
accomplished using a vacuum relay at the feed point. 

Jack W0UCE 



> We are testing N3ND's new 160 antenna tonight (Monday local time) 1818 
> @ 0005Z.  This is another antenna based on RBN validated untraditional 
> design. 73, Guy.

To see the RBN, go to http://reversebeacon.net/srch.php

Type in N3ND, hit enter.  Look for the 160m spots around 03z 15 Nov. The 03z
spots are at 400 watts.  The 00z spots were at 100 watts, before the band
was really open to the SE.  RBN's from two other stations in the area were
down by similar measure at 00z and up at 03z.

This is an up 70, over 60, down 5 wire fed via a feedline isolation
transformer against a 5/16 wave single wire folded counterpoise at 8 feet.
No radials.

There is no way his small lot property could support a dense radial field,
either buried or elevated.  Therefore, presuming that undense irregular
radials that would fit would be excessively lossy, per RBN data previously
gathered, the +33, -33 foot linear folded counterpoise
(FCP) is used instead, elevated at 8 feet.  The folds in the counterpoise
are designed to self-cancel fields as much as possible, thereby minimizing
ground induction, which is loss to skywave.  The 66 foot straight line (more
or less, not critical) FCP footprint is much easier to place on property
than some miscellaneous attempt at a broadcast standard radial field.

73, Guy.
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UR RST IS ... ... ..9 QSB QSB - hw? BK