I'll google the TEKRAD and see what happens. I'm assuming a 80-20M and needs a tuner that can deal with open ladder.
OOPS Google does not turn up anything for TEKRAD. I saw TEKND.
Might this be something from 1968? Some PDF 9 megs big tries its best to download and there may be something in that website.
Before last Summer I built the HGSW antenna "as seen in QST". It was every bit as good as my A3S Yagi 70 feet up. For the two directions. It is a dipole with tuned networks, just hangin' a 13 foot piece of ladder line, and pre-measured points to create a gain antenna of sorts. It was a High gain single wire antenna. It was not magic and a waste of time. The author actually modeled it from the computer.
http://www.infoark.org/InfoArk/Science-Engineering/Radio/Antennas/High%20Gain%20Single%20Wire%20Beam-Wilson_2009-07.pdfCan you give a link to your design, Patrick?
Fred