I stand corrected. A vertical with radials is of course unbalanced. I'm
appropriately embarrassed.
No more antenna advice from me.
Marsh KA5M
-----Original Message-----
From: Richard (Rick) Karlquist <richard@karlquist.com>
Sent: Friday, December 02, 2022 3:42 PM
To: marsh@ka5m.net; 'Pete Smith N4ZR' <pete.n4zr@gmail.com>;
towertalk@contesting.com
Subject: Re: [TowerTalk] High power 2:1 transformer was Re: 16om vertical and
the number of radials
Wrong device. You want an "UNUN" not a "BALUN".
A vertical antenna is unbalanced.
I have an UNUN built with RG-58 coax wound around a 2.4 inch #33 ferrite core.
Very easy to make.
Rick N6RK
On 12/2/2022 1:05 PM, marsh@ka5m.net wrote:
> Yes, match at the feedpoint.
>
> You might check out Balun Designs:
> https://www.balundesigns.com/1-2-balun-25-to-50-ohms-3kw-1213/
>
> Marsh, KA5M
>
>
> -----Original Message-----
> From: TowerTalk <towertalk-bounces@contesting.com> On Behalf Of Pete
> Smith N4ZR
> Sent: Friday, December 02, 2022 2:39 PM
> To: towertalk@contesting.com
> Subject: [TowerTalk] High power 2:1 transformer was Re: 16om vertical
> and the number of radials
>
> A somewhat related question - as the R component at the feedpoint of my
> inverted L goes down toward 25 ohms, I've begun wondering if I should do some
> matching at the feedpoint, rather than using my tuner in the shack, even
> though feedline losses at 160 are relatively low. Can someone point me
> toward a good way to do a 2:1 downward transformation? I already have a
> common mode choke at the feedpoint.
>
> 73, Pete N4ZR
> Check out the new Reverse Beacon Network web server
> at<https://reversebeacon.net>.
> For spots, please use your favorite
> "retail" DX cluster.
>
>
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