[TowerTalk] 2 Element Quad and Baluns

[Hector Garcia XE2K]

Daniel

Choke  balun at each Feeded LOOP is needed,  ferrite over the coax  like k9yc recommend,  what you will need  is the real impedance of each band, 
in my case my quad only need a transformer in 12m (is near 100 ohms), the others bands runs  direct to 50 ohms with swr  low ,  only 17m is 1.5 :1 minimum has is now.

Check your  antenna model and you will see if you need a 1:2 balun  Gamma or 75 ohms 1/4w line  

here a few ideas of a good model,  get access and read

http://www.cebik.com/content/a10/quad/quad4.html



J. Hector Garcia XE2K / WT6J

   Mexicali B.C  DM22fp

P.O.Box 73 

El Centro CA 92244-0073

USA

http://www.xe2k.net

http://www.dxxe.org

--- On Mon, 2/1/10, Daniel Hileman <n9wx at hotmail.com> wrote:

From: Daniel Hileman <n9wx at hotmail.com>
Subject: [TowerTalk] 2 Element Quad and Baluns
To: "TOWER TALK" <towertalk at contesting.com>
Date: Monday, February 1, 2010, 6:49 PM


Hi Everyone,

Well, I appreciate the responses from everyone about Fiberglass spreaders. well I found that Max-gain isnt as expensive as I originally thought, so I'm gonna probably go with them. I now have a new question. I am trying to build a two element 5 band (20-10m) quad, it will be on about a 10' boom. I have read some places that say you do not need a balun, and others that say you will need a 2:1 balun if you want to connect all the coaxes to one feed (or a relay.) Can you just feed these antennas to one SO-239 without a Balun? 


Thanks and 73,
Daniel N9WX
                           
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