04-21-14 10:42 Roy Witt wrote to Ed Vance about Resurrected   
      
    RW> @MSGID: <5355973E.340.amtradio@capcity2.synchro.net>   
    RW> Greetings Ed!   
   Howdy! Roy,   
   -snip-   
    RW> The DDRR (Directional-discontinuity Ring Radiator), vertically   
    RW> polarized antenna....   
      
    RW> The DDRR illustration in the 1967 Radio Amateurs Handbook shows   
    RW> two wire circles, the top wire being an open circle and the   
    RW> bottom as a closed circle. One end of the open circle attaches   
    RW> to the bottom circle as H in the formula.  The feedpoint is X   
    RW> distance from the open wire attachment, fed with RG-8/u, shield   
    RW> to bottom circle. The illustration also shows a grounded point   
    RW> on the bottom circle, which means it is attached or laid on the   
    RW> ground. Not required as the antenna we made was grounded by the   
    RW> vehicle body.   
      
   The Handbook I brought up here is the 1976 Edition and I can see a   
   VHF Halo that looks Vertically polarized on page 330 but it doesn't   
   look anything like the 6 Meter Horizontally polarized Halo I used with   
   my Sixer.   
      
   I will go see if I have a 1967 Handbook to see what this here DDRR   
   is all about.  Thanks!   
      
   ... Rain is saved up in cloud banks.   
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