[ARC5] AN/ARC-5 Output Argument- Again.

[J Mcvey]

 Here ya go Dave,
This is what helps me figure out coax transformations. Enjoy.

    On Thursday, March 17, 2022, 02:27:33 PM EDT, David Stinson <arc5 at ix.netcom.com> wrote:  
 
  
Well, I ain't smart enough to have a credible 
 theory about coax length transformations. 
 I take the "Farm Boy" approach:  
 "Throw it against the barn and see if it sticks."
 Sorry, guys.  I don't have enough years or money left
 to go back to college for more "learn-nin."
 That's what I've got you "Smart People" for! ;-D
 
 I typically tune the rig into a 50-Ohm non-reactive load,
 then switch to a resonant antenna.  Very minor tweeks
 are usually required to peak into the antenna- usually
 less than a turn on the series inductance.   Changing 
 the feed point connection to my full-wave Delta loop,
 like removing the "matching" coil of 75-ohm coax 
 and replacing it with a quality 2:1 balun resulted
 in only minor changes in transmitter matching.
 
 73 DE Dave AB5S
 

 On 3/17/2022 12:23 PM, J Mcvey via ARC5 wrote:
  
 

 I'm not going to be a total naysayer, but I have  a theory: Perhaps some of the impedance transformation is happening in the coax? 
  I seem to recall having this discussion a while ago. Different lengths of cable will change the match quite a bit, from working well to not at all.
   
 


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