[TowerTalk] G5RV balun question

[John G.]

Hi Joe,

Thanks for the email. I figured I was just looking at a way to improve it. If it does reduce noise some, then it was worth it.

73 John AF5CC
  ----- Original Message ----- 
  From: Joseph or Ruth Patrick 
  To: John G. 
  Cc: towertalk at contesting.com 
  Sent: Friday, May 11, 2012 2:24 AM
  Subject: Re: [TowerTalk] G5RV balun question


  Good Evening John

   I would ask you after using your antenna system for 14 years with good results why are you considering adding a coax choke? Are you having a problem with RF in the shack? Are you having a noise problem that you did not have before? To answer your question if there is RF coming back down the shield coax choke may help reduce this. As to the noise if it is being caused by the first problem then fixing the first problem should help with problem #2.
  The reason I ask this is I have had the same coax, feed line, balun, and HF antenna now for about 9 years. It also works very well and always has.
  I look at it like this. If it ain't broke don't try to fix it. Now if you are trying to improve on the system then You may get some different answers. This is JMHO. Good luck and let us know how you make out.
   
  73 DE K4XZ Joe Patrick
  God Made Man
  Sam Colt Made Them Equal 





------------------------------------------------------------------------------
  From: John G. <af5cc at fidmail.com>
  To: ham-antennas at yahoogroups.com; towertalk at contesting.com
  Sent: Thu, May 10, 2012 5:39:54 PM
  Subject: [TowerTalk] G5RV balun question

  I have a homebrew G5RV type antenna.  The antenna wire is fed with 300 ohm radio shack twin lead, which runs to a Van Gorden HI-Q 4:1 balun, which then feeds RG-11 75ohm coax.  I have used this system for 14 years now with good results. I am wonder if adding a coax choke balun (several turns of coax wound up in a circle) would help at all. I would like to minimize RF on the shield of the coax (as well as noise it would pick up) and think the HI-Q balun should do this, but would the coax choke help as well, or just be redundant?

  John AF5CC
  _______________________________________________



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