HG>Hi AGN Tom,   
      
   HG>Agreed that you can make a 1:4 balun by using a 1/2 wavelength coax to   
   HG>both transform a higher impedance feedpoint to the coaxial feeder AND to   
   HG>balance the unsymmetric coax feeder to a balanced feedpoint.   
      
   HG>But this chat of cutting/adding lengths of coax to a feedline to find a   
   HG>point where the SWR is low doesn't lead anywhere. As I stated the same   
   HG>bad SWR still exists along the length of the coax feedline.   
      
   HG>PS. I did forget to mention the BAZOOKA which consists of a 1/4 w/l tube   
   HG>sleeve over the top end of the coax feeder or a 1/4 w/l tube same dia-   
   HG>meter as the coax. In both cases the 1/4 w/l is connected to the braid   
   HG>of the coax but the open end of the tube sleeve is connected nowhere   
   HG>whereas the top end of the parallel 1/4 w/l tubing is connected to the   
   HG>other side of the split fed element.   
      
   HG>In both cases you'll get a balanced feed from an unbalanced coax feeder.   
      
   HG>If you want to change the feed impedance of the antenna you can either   
   HG>shorten or lengthen the fed element beyond resonance but will then have   
   HG>to deal with the inductive or capacitive reactance that will result.   
      
   HG>Balancing coax fed driven elements has also become very much simpler   
   HG>with the advent of toroidal cores as well as transforming impedances.   
      
   HG>The simplest way to match a dipole antenna used as a driver on a yagi   
   HG>without having to cut the dipole at the center is of course the gamma   
   HG>match.   
      
   All true. My point was that there is more than one way to skin a cat.   
   OF course some are easier then others but that does not make then   
   Invalid.   
   And my example in a later mesage of a G5RV dipole being fed by 450 ohm   
   ladder line with both the antenna(75 Ohm) and Transmitter(50 Ohm)   
   being happy, in a very narrow bandwidth of course, makes my point.   
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