A 7 element OWA Yagi for 14MHz with a 24.831mtr boom
Revised September 2010 v1.0
Premium commercial versions of this antenna at Innovantennas
I WILL MODEL THIS ANTENNA IN ANY TUBE SIZE OR TAPER SECHDULE FOR YOU, CONTACT ME VIA EMAIL
This is a high-gain, wideband OWA (Optimised Wideband Array) Yagi which covers the whole of the 20m band with an SWR of less than1.25:1. It has options with both UK/USA and European sized tube and has a 4 section taper.
This Antenna has been modelled using NEC4 and confirmed by FEKO. This is thousands of dollars of the very latest antenna design software available and the results are highly accurate. When loading into your software, you will see similar SWR but not the same. Please do not alter the model, build to these dimensions for the best results.
Contact me if you are unsure what correction (if any) you require forthe element holders/stand-offs you will use or any other questions you may have.
Antenna Layout and Construction:
12.05dBi @ 14.200MHz
23.86dB @ 14.200MHz
SWR: Below 1.25:1 from 14MHz to 14.350MHz
Refer to the above drawing.
Antenna Dimensions for UK/USA and European sized tubing
Taper: inner Section, 1.25 inch or 30mm tube (total length 2.2m). Mid Section 1 inch or 25mm tube, Outer section 3/4 inch or 20mm tube. End sections as per below schedule ( 5/8 inch or 16mm tube).
Spacing End Section Length (All below sizes in Metres)
Reflector 0 2.030
DE1 3.255 1.935
D1 4.313 1.653
D2 7.197 1.634
D3 12.041 1.544
D4 18.509 1.477
D5 24.831 1.299
Azimuth Plot of this super antenna
Elevation plot of this antenna
Elevation plot of this antenna at 20M above ground
Any questions, please ask!