In a message dated 05-06-14, Tom Walker said to Holger Granholm:   
      
   Hi Tom,   
      
   HG>The antenna Tom is describing was originally described as 'The Swan   
   HG>Multidrive 2-Meter Antenna' in QST October 1969. Because of previously   
   HG>told reasons it's now called a KLM-yagi.   
      
   TW>When one does an internet Search for LPA antennas it's picture comes   
   TW>up along with the Twin Boom one Roy had been talking about and both   
   TW>are called LPA antennas.   
      
   In that case the information source on the Internet doesn't know what a   
   Log Periodic Antenna (LPA) and its feed system mean.   
      
   TW>And dispite the physical differneces they both are using the same   
   TW>Theroy to widen the bandwidth of the Antenna.   
      
   I wouldn't say they do. A real LPA is fed at the small end and what we   
   would call parasitic elements are in reality staggered 1/4 wl driven   
   elements.   
      
   The Swan Yagi uses a stack of phased driven driven elements and normal   
   slightly shortened « wl directors and slightly lengthened « reflector(s)   
      
   The Swan Multidrive antenna that was presented in QST had four phased   
   driven elements and normal reflector and directors. All the driven   
   elements are in line (i.e. not staggered).   
      
   CUL,   
      
   Holger   
      
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