For additional information read
http://www.w2du.com/r2ch22.pdf
and look at Fig 22-7 page 10 of 20 Radiation Pattern of the 1 1/2 turn 1,25 wavelenght Quadrifilar Antennas.
Tnx, Dom for that info.
I received a number of requests for quadfilar information, again.
Goto
http://cid-1973adc8c1d3207c.skydrive.live.com/summary.aspx?sa=140581470 and see the five files starting with the pic Quad2.4gigs
Be very precise with the measurements, particularly on the 435... I scaled it from the 2 meter, made a slight measuring error on the driven filar, shortened it by 1/4" and the swr went from 3 to 1 to 1.6 to 1....
And use the BEST "N" connectors and coax that you can find, the most expensive part of the antenna....
73, Dave, WB6LLO dguimon1@san.rr.com
Disagree: I learn....
Pulling for P3E...