TopBand: Re: Sidearm and Gamma Match.

[Fred Hopengarten]

From:
Fred Hopengarten, K1VR
Six Willarch Road * Lincoln, MA 01773-5105 * 617/259-0088
e-mail:  k1vr@juno.com
Big antennas, high in the sky, are better than small ones, low.


On Mon, 4 Nov 1996 17:21:50 -0500 George.Guerin@kellogg.com (George
Guerin) writes:

>     So, assuming you need to use a gamma match vs. a shunt feed with 
>omega 
>     match, I guess I would gradually bring it in and then let it go 
>back 
>     out to the 3 ft point.


K1VR:  I use a gamma rod and an omega match.


>     You didn't say how well you insulated your guy wires, and what 
>you 
>     have on top of the tower to "top load" it.


K1VR:  I have Phillystran guy wires at all levels.  At 91', on a TIC
RingRotor, I have a Cushcraft 40-2CD, and at 97' I have a TH6DXX (the
tower has a stack equal to a TH19DXX -- two TH6's and a TH7).


  If I knew what was up 
>
>     there, I could look up a copy of the article I have at home and 
>tell 
>     you what the article says is the recommended feed point, 
>effective 
>     length and approx values of capacitors.
>     
>     I would be interested to see what others say.
>     
>     73         Good luck       George  K8GG


K1VR:  I will, of course, summarize.

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