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There is an antenna program by N4UJW called QY4. Its at:
http://www.hamuniverse.com/yagibasics.html
This is an old DOS program but works ok in windows. In the QY4.zip file is a
program QY4Util.EXE. It covers the design of the Gamma match. Just enter the
frequency and it will give oyu the dimensions and capacitance.
* 73's Jim W5IFP *
>-----Original Message-----
>From: towertalk-bounces@contesting.com
>[mailto:towertalk-bounces@contesting.com]On Behalf Of Peter
>Sent: Saturday, May 02, 2009 3:58 PM
>To: towertalk@contesting.com
>Subject: [TowerTalk] Gamma match
>
>
>Hi
>
>I like to make a rotory dipole for 40 meter (full size)
>For constructions reasons I want to feed the the dipole with a
>gamma match.
>
>Nec4win says that the impedance will around 60.8 +j0.12
>How can I calculate the correct gamma rod length and the needed C?
>
>TIA!
>
>Peter
>PC2A
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