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   AMATEUR_RADIO      Ham radio for when Armageddon strikes      2,531 messages   

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   Message 607 of 2,531   
   TOM WALKER to ROY WITT   
   LPDA   
   30 May 14 07:54:00   
   
   RW>Greetings TOM!   
      
      
   RW> RW> TW>> The twin bom antennas is called a "Real World" LPDA   
      
   RW> RW>> 'Real World' can and is used to describe a lot of things. That   
   RW> RW>> doesn't change when we're talking about antennas.   
      
   RW> TW>> becasue it is much easer to construct. But Both use the same Theory   
   RW> TW>> and give the same Results   
      
   RW> RW>> That's debateable.   
      
   RW> TW> Not This Time Roy, not at all.   
      
   RW>Where's your link to such a build?   
      
   RW> TW> What i am desctibing is build directly using the LPDA antenna Theory   
   RW> TW> Drawing on hte Internet.   
      
   RW>Link?   
      
   I sent a Liknk before and you apparently Ignored it.   
      
   RW> TW> And is an Absolute copy Theory Wise as what you are talking about   
   RW> TW> except for the using of a single boom with all the elements insulated   
   RW> TW> from the boom and uses wiring in place of the Two Booms which perfom   
   RW> TW> the same purpose as the wireing in the antenna I am talking about   
      
   RW>That isn't LPDA theory...LPD antennas include the boom as an active part   
   RW>of the antenna. What you've done is isolate the boom(s) from being an   
   RW>active part of the antenna and only using the dipoles. I really can't see   
   RW>building such a monster, when it is so much easier to build a LPDA...   
      
   Only the one you are talking about has two booms with the Boons being a   
   part of the feel line to the elements.   
      
   I have one of the antennas I am talking about on my roof constructed   
   from the Pure Origional LDPA theory drawing, Which I perviously linked,   
   where all the elements are insulated from the support boom and are   
   connected by a crossover wiring system, as in the theory drawing, so All   
   elements are connected to the coax. Half to the center conductor and   
   half to the Shield.   
      
   ---   
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