In a message dated 05-03-14, Tom Walker said to Holger Granholm:   
      
   HG>RW>The other issue is that Tom is thinking that a yagi and a LPA are   
   HG>RW>one and the same antenna, when in fact they are two different   
      
   HG>Agreed.   
      
   TW>Abbsolutly NOT true. I know a great Deal about antennas them Roy   
   TW>Thinks. What we have is a Termonology gap. Things like calling an   
   TW>"Element" a "Boom" rwally complicats the situation.   
      
   Well, you'll have to remember that Roy is a very much younger ham and as   
   such cannot have the knowledge we have achieved through the years.   
      
   HG>The LPA antenna you are writing about has several driven elements that   
   HG>are fed by crossing the feed to every element next in line. The lengts   
   HG>of the driven elements are staggered to achieve a broader bandwidth.   
      
   This is not a LPA antenna but a yagi that is fed by a number of driven   
   elements.   
      
   HG>I know this type particularly well because I have built and measured   
   HG>several concepts for both 2 m and 70 cm and used them actively.   
      
   HG>The other kind of LPA is one built on two booms insulated from each   
   HG>other and fed from (often) the front end. The elements are not dipoles   
   HG>per se but are quarter wave length directors staggered on the twin booms   
   HG>so that each director is only half of a director the second half of it   
   HG>being placed where the next director (in a yagi) should have been.   
      
   TW>Exactically and that is a prefect explination aobut the point i was   
   TW>trying to make   
      
   Good, so we agree about that.   
      
   73 de Sam, OH0NC   
      
   aka Holger   
      
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