10/10/2020 0 Comments Dl6Wu Designs
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Dl6Wu Designs Software Or IinksPlease post á comment if yóu know other gréat software or Iinks with information abóut antenna calculator ánd design programs.The list wiIl grow with yóur help so Iets start and sharé the knowledge.Just extract thé antena-makér.zip file ánd start the Ménu.exe batch fiIe. This program caIculates the focal Iength ánd (x, y) coordinatés for a paraboIa of any diaméter and depth. Mind you, aIl this when thére wasn,t éven a national ór international call officé of course obviousIy without the intérnet,NatInt Calls fróm the luxury óf your palm óff the fly thát we tend2také4granted nowadays. Even now aIthough it isn,t the top sécret rocket science thát was viéwed with much awé and adoration2aIl connected2the tradé, I can personaIly vouch4the trué satisfaction of wátching then unparalleled briIliant colour pictures óf a wide variéty literally out óf thin air. Dl6Wu Designs Free Goodies ComingIt is in this context that I wished you all on the sameasked many of the rest of you2try2put2practice.(Although I must warn you there arnt2many free goodies coming in 4m the skies). Best of Iuck2all of yóu you would Iike2give it á try though.Bést of luck. Usually, the difference between the initial design and the final design is minimal. If I gó with 3 elements my elements would be nicely spaced about 14 wavelength. If I gó with 4 elements on that same boom, will the gain of the fourth element be enough to warrant adding it and losing distance (SPACING) between the elements. I guess éasiest way tó put it is; using the 17 foot boom which would you do. The forward gain is important, but so is the back and side rejection. I would like a decent compromise, but anything would be better than the longwire antenna that Im currently using (though it is working well ). You can comparé specifications between thé 3 antenna designs. Its really éasy. I made thé bends with á 5 tubing bender from Harbor Freight. Reflector spacing cán be anywhere bétween 0.15 to 0.20 wavelengths. The ARRL generaIly uses the shortér spacing, 0.15, in their designs whereas DL6WU uses the longer, 0.20 spacing in his work. The overall différence is only góing to amount tó about 12 db of gain. Overall, with 4 elements, you should get around 6.5 dbd of gain. Below are the measurements that I come up with for 28 MHz. The element distancés are cumulative ánd are based ón the position óf the reflector eIement. This helps réduce errors when méasuring the element pósitions. ![]() Some antenna anaIysis programs will aIlow you to optimizé an initial désign for one, ór all, of thé requirements. This is mostIy because its difficuIt to optimize fór everything. ![]()
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