Greetings Holger!   
      
    TW>> .......... The origional implementation had to have ALL the   
    TW>> "Elements" insulated from the support boom and wiring used to   
    TW>> alteanate the left and right conections as in figure 1 in my   
    TW>> reference web page.   
      
    HG> In the RSGB VHF/UHF Manual that antenna type is called "Log-periodic   
    HG> Yagi bandpass antenna". That is also the basis for the "Swan Yagi" as   
    HG> made by the Swan TV antenna manufacturer in the US and also presented   
    HG> by Ed Tilton, W1HDQ in the QST magazine.   
      
   I think you'll find that Swan has been out of business for decades and Ed   
   died in 1997...   
      
      
       Have a day!   
      
            R\%/itt - K5RXT   
      
   --- GoldED+/W32 1.1.5-31012   
   --- D'Bridge 3.99   
    * Origin: HAM Radio, aka Amateur Radio. 804? Over! (1:387/22)