Greetings Holger!   
      
    TW>>> but about Balun Matching or 1/2 wavelength Coax matching a dipole   
      
    RW>> Baluns are used to tune the antenna to 50ohms. A 1/2 wavelength of   
    RW>> coax isn't matching the antenna to anything.   
      
    HG> No, because a 1/2 w/l (incl. velocity factor) of coax just repeats   
    HG> the same impedance at the other end.   
      
   Right.   
      
    RW>> I've experimented with the idea that any length of coax in 1/4 wave   
    RW>> increments can be used to match a load, but that isn't true.   
      
    HG> You can transform impedance with a 1/4 w/l of coax of another   
    HG> impedance to an impedance that may be more useful.   
      
   Yes.   
      
    HG> But you can never TUNE an antenna with any sort of feedline.   
      
   Well, yes you can because the antenna needs coax attached to it with an RF   
   signal to be tuned. But I know what you meant. When I was on a ladder,   
   tuning my 4 element yagi, with the xyl pushing the xmit switch in the   
   shack, I got a nice RF burn when I touched the Gamma matching device while   
   she keyed the microphone and I didn't know it.   
      
      
       Have a day!   
      
            R\%/itt - K5RXT   
      
   Being judged by McJerkey doesn't define who I am, it defines who he is.   
      
      
      
   --- GoldED+/W32 1.1.5-31012   
   --- D'Bridge 3.99   
    * Origin: HAM Radio, aka Amateur Radio. 804? Over! (1:387/22)