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Technical Topics => Equipment => Topic started by: Matt285 on December 13, 2019, 1915 UTC

Title: Fan dipole
Post by: Matt285 on December 13, 2019, 1915 UTC
Has anyone ever built an antenna with these measurements. Looks like it can be made with one side or two like a standard dipole-

Note: In the instruction box above, the last sentence refers to the long portion of the wires, not at the connection point to the coax feed line to the receiver. All wires are connected together at the connector center conductor wire!

(frequencies shown below are approximate shortwave band centers):

Wire 1  (LONGEST WIRE) 3.25 MHz (90 meter band) 09.75 MHz (31 meter band 3rd harmonic)
468 divided by 3.25 = 144' 0"

Wire 2  3.95 MHz (75 meter band) 11.85 MHz (25 meter band  3rd harmonic)
468 divided byi 3.95 = 118' 6"

Wire 3  5.10 MHz (60 meter band) 15.30 MHz (19 meter band  3rd harmonic)
468 divided by 5.10 = 91' 9"

Wire 4  (SHORTEST WIRE) 5.90 MHz (49 meter band) 17.70 MHz (16 meter band  3rd harmonic)

Title: Re: Fan dipole
Post by: Josh on December 13, 2019, 2316 UTC
http://www.bcro.org/wp/wp-content/uploads/Fan-Dipole-pdf.pdf

http://www.hamuniverse.com/multidipole.html

Never been a fan of fans (lol), much rather just fill the same space with a single dipole and force feed it with a tuner.