Towertalk
[Top] [All Lists]

## [TowerTalk] optimum height

 To: [TowerTalk] optimum height alsopb@gloryroad.net (alsopb) Sat, 28 Jul 2001 16:18:19 +0000
 ```As stated originally the boom length in the formula is in wavelengths. A 47' boom is about .7 wavelength on 40 meters. The formula predicts a spacing of .84 wavelenth or about 56 feet. 73 Tom Rauch wrote: > > Hi Brian, > > I don't understand what the following means. Is something wrong? > > > I queries WX0B about the rule of thumb regarding "optimum" stacking > > height. > > > > Here was his response: > > *********************************** > > For HF antennas over ground, W2PV did the math correctly and the > > formula is SQ rt of boom length is the widest stacking distance you > > should use on a yagi. The results are in boom lengths just as you > > state. > > My 40 meter yagi has a 47 foot boom. Optimum stacking distance > for gain is ~90 feet, depending on array mean height. > > Using that formula, I should stack my 40 meter beams sqrt of 47, > or 7 feet apart MAXIMUM?? A 1 WL boom antenna would stack > at .7WL...which also would be much less than optimum > ....although getting closer. > > Was something stated or conveyed incorrectly above, or is > something missing? It clearly is not correct. > 73, Tom W8JI > W8JI@contesting.com ----- FAQ on WWW: http://www.contesting.com/FAQ/towertalk Submissions: towertalk@contesting.com Administrative requests: towertalk-REQUEST@contesting.com Problems: owner-towertalk@contesting.com ```
 Current Thread [TowerTalk] optimum height, alsopb [TowerTalk] optimum height, Tom Rauch [TowerTalk] optimum height, alsopb <= [TowerTalk] optimum height, Pete Smith [TowerTalk] optimum height, n4kg@juno.com [TowerTalk] optimum height, alsopb [TowerTalk] optimum height, Tom Rauch