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## [TowerTalk] Re: Optimum Stacking Distance

 To: [TowerTalk] Re: Optimum Stacking Distance Jan.E.Holm@telia.se (Jan.E.Holm@telia.se) Sat, 28 Jul 2001 09:32:35 +0200
 Formula you are looking for might be: y X= -------- 2sin(Z/2) where X= optimal stacking distance Y= lambda (boom lenght) Z= 3 dB beamwith angle This is from work by DL6WU This is alo used Stacking dist= 57.3 ------------------- 3 dB beamwith / 2 This is for VHF/UHF stacking for optimum pattern EME arrays. Will give very clean pattern with low sideloobs, i e the array will have very good G/T. I hope I didn´t mess these formulas up but I think this might be what KQ2M was thinking about, in any case I dont think it does add anything important to this subject. 73, Jim SM2EKM ------------------------------------------------------------ However, this doesnt apply for HF stacking where we are looking for other things. > > > Some advice to take the effective boom length of the antenna in > wavelengths > and take the square root of it. This is the optimum stacking > distance of > your beams in Wavelength. > > I think it is way too general not taking into account heights and > antenna > specifications. > > You can only find the answer with modelling software. > > Tonno > ES5TV > > ----- Original Message ----- > From: "Robert Shohet" > To: > Sent: Friday, July 27, 2001 8:47 PM > Subject: [TowerTalk] Optimum Stacking Distance > > > > > > I have been told that there is a formula for the optimum stacking > > distance > > of similar antennas that is based on the antenna boom lengths and > > other > > factors. > > > > If anyone is familiar with this, could they please post the > >formula? > > > > Tnx & 73 > > > > Bob KQ2M > > > > > > > > > > ----- > > FAQ on WWW: http://www.contesting.com/FAQ/towertalk > > Submissions: towertalk@contesting.com > > Administrative requests: towertalk-REQUEST@contesting.com > > Problems: owner-towertalk@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 > ----- FAQ on WWW: http://www.contesting.com/FAQ/towertalk Submissions: towertalk@contesting.com Administrative requests: towertalk-REQUEST@contesting.com Problems: owner-towertalk@contesting.com
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