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8 mar 2022 · Plots for 20m 3-element 50 ohm delta loop quad. 40m 3-element 112 ohm delta loop quad. This antenna uses severely flattened elements to get a 112 ohm feedpoint impedance, but that gives it the same SWR bandwidth as the preceding 20m design at half the frequency.
Full-Size 40-Meter Quad. A full-size 2-element quad for 40 meters has the width of a half-size 40- meter Yagi--about the same width as a full-size 20-meter beam. However, the vertical space requirement and the consequential support structure is very significant.
40 Meter Mini-MOXON Beam Antenna At W7XA. Designed, built, and presented by: Al Koblinski. W7XA. Design goals. Some forward gain. Good directivity (high F/B and F/S ratios) Relatively small size. Good Bandwidth (min. 200KHz @ <2:1 SWR) Light weight. Easy construction and tuning. Low cost Some current loaded 40M 2 El. beams.
The 40m Loop antenna Ed, VK2JI (This antenna is also known under the names “Sky Loop” and “DX-Buster” and is very similar to a horizontal delta loop). The following is an article which I wrote and was published in the February 2013 edition of the Central Coast ARC “Smoke Signals” magazine.
Portable wire antenna for 40 and 80 meter made with a RF Chocke. Can be adapted to work on 160 meters by adding additional 6.9 meters wire at its end. Quad Antenna System by Pfeiffer Maltese. Excellent Quad Antenna projects for 40 20 17 12 10 and 6 meters band in this pdf file project by Pfeiffer Maltese.
This antenna is a full wavelength single-delta-loop, with the point of the triangle at the top of the single support pole, and fed near one of the corners - One Quarter Wavelength down the diagonal leg.
40m-10m DELTA LOOP ANTENNA - GU3WHN This simple broad band antenna is easy to build, has gain similar to that of a dipole and is tolerant of nearby objects. It can be erected in almost any configuration provided the wires are well separated otherwise it acts as a singe band broadband dipole.
