[TowerTalk] Stacked TH5MKII's

[K7GCO@aol.com]

In a message dated 11/25/00 5:12:46 PM Pacific Standard Time, K7GCO writes:

<< 
 In a message dated 11/25/00 4:11:09 PM Pacific Standard Time, 
k7hph@xmission.com writes:
 
 << Hello:
  
  I was wondering if anyone has had any experience stacking a pair of
  TH5MKII's, or other tribanders for that matter? I have about 15 feet of
  distance I can put between them. Would it be worth it? Thanks in advance for
  the info.
  
  73, Mark...
   >>
 That is far too close.  I wouldn't even stack 2 10M beams that close.  The 
SWR's  and F/B's would be up set and you would lucky to bet 1 dB gain on 20M. 
 A general rule of thumb is to have at least 5/8 wave for 2-3 element beams.  
You aren't even 1/4 wave on 20M.  The more the gain the wider the spacing 
needed to maximize a single lobe of about 3 dB gain.  k7gco >>

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