[TowerTalk] Fwd: Fwd: Adjusting a Gamma Match on a Yagi withan AntennaAnalyzer

[hanslg at aol.com]

 Hi Jim,

I seen that too bu in this case, no.

Hans

 


 

 

-----Original Message-----
From: Jim Hargrave <w5ifp at gvtc.com>
To: hanslg at aol.com
Cc: towertalk at contesting.com
Sent: Wed, Nov 10, 2010 8:54 am
Subject: RE: [TowerTalk] Fwd: Adjusting a Gamma Match on a Yagi withan AntennaAnalyzer




Hans,



Most gamma matches have a capacitor consisting of the feed coax or an

insulated rod inside the outer rod. This is the series capacitor. Its

adjusted by moving the outer rod in and out. This gives you two adjustments

of the Gamma match. Inductance by adjusting the shorting bar and capacitance

by sliding the outer tube.



Is it possible that your yagi has this type of adjustable capacitor?



     73's Jim

      W5IFP

>

> Quoting hanslg at aol.com:

>

> >

> >  I want to remember that there is a possibility to get rid of the

> > capacitor by adjusting the length of the drive element. I purchased

> > a 4 element yagi of unknown origin at a flee market. It has a gamma

> > match without a capacitor.

> >

> > Hans - N2JFS

> http://lists.contesting.com/mailman/listinfo/towertalk