A better solution for the coax balun is to use a solid dielectric coax such
as RG-213 and wind about 15 to 18 ft on a piece of 3" ID PVC pipe. Remember
more turns, longer coil length equals more inductance. The 8" diameter is
much much too large for and efficient coaxial balun unless you are making it
for the AM broadcast band. I refer to these as "the ugly balun". They
will handle all the power you can generate with nil for loss. Even with a
10:1 SWR it is happy.
----- Original Message -----
From: "Jim WA9YSD" <wa9ysd@yahoo.com>
To: <tentec@contesting.com>
Sent: Monday, July 23, 2007 4:56 PM
Subject: Re: [TenTec] RFI Solution
>
>
> A side benefit was a drop off with white noise. I can hear them week DX
> stations better. This was a step in the right direction.
>
> I had 3 rounds with the FCC since 1968. With no restrictions. There is
> not a day that goes by that I do not think about RFI and what I have not
> tried that just might work.
>
> I have coils of coax at the feed point of each antenna. That bad side of
> it is I coiled it like rope and electrical taped it. I need some of those
> 8" diameter plastic coffee cans and wind the cable around those and make a
> better choke.
>
> The shielded ground helped a bunch a few years ago. You can go 30, 40
> feet with one, and is worth the effort. The trick is to eliminate the RF
> ground loops. Tuff to do at times, and every ones situation is different.
> Consumer products keep getting worse.
>
>
> Keep The Faith, Jim K9TF/WA9YSD
>
> ---------------------------------
> Building a website is a piece of cake.
> Yahoo! Small Business gives you all the tools to get online.
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>
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