I tried finding the sweet spot at this qth C31XR at 90 feet 2 EL xm 240 at
70 feet. Tried every 5 feet between 40 and 70 feet over a 5 day period with
no luck either
73
Chet N4FX.
-----Original Message-----
From: topband-bounces@contesting.com [mailto:topband-bounces@contesting.com]
On Behalf Of Pete Smith
Sent: Thursday, December 15, 2011 6:30 AM
To: topband@contesting.com
Subject: Re: Topband: Some Success
I would try to find that sweet spot first, because if you're like me,
you never will. I have stacked tribanders, a 2-el 40-meter beam and an
80 meter lazy-v array all on one tower. I modeled the thing and found
where (supposedly) the 50-ohm point would be. After about 5 trips up
and down the tower, without finding anything even remotely close to 50
ohms over a +/- 15 foot range, I gave up and just left the omega match
in place.
73, Pete N4ZR
The World Contest Station Database, updated daily at www.conteststations.com
The Reverse Beacon Network at http://reversebeacon.net, blog at
reversebeacon.blogspot.com,
spots at telnet.reversebeacon.net, port 7000 AND now
at arcluster.reversebeacon.net port 7000
On 12/14/2011 5:26 PM, Bob Garrett wrote:
> Hello Topbanders,
>
>
>
> Thanks to everyone who responded to my query for help regarding my shunt
fed
> tower. I did configure an Omega match. I do notice that the BW is much
> narrower using the Omega match compared to the single series capacitor.
> Once I get all the to antenna work completed, I will probably look for the
> "sweet spot" again and use only the series cap. Until then, the Omega
match
> certainly seems to work. I'm also considering changing out the piece of
> RG8X that I use for the shunt arm and replacing it with a 3 or 4 wire
cage.
> Any suggestions on spacers to use for configuring the cage?
>
>
>
> Have a great Holiday and once again, thanks for the collective wisdom.
>
>
>
> 73, Bob K3UL
>
>
>
> _______________________________________________
> UR RST IS ... ... ..9 QSB QSB - hw? BK
>
>
_______________________________________________
UR RST IS ... ... ..9 QSB QSB - hw? BK
_______________________________________________
UR RST IS ... ... ..9 QSB QSB - hw? BK
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