Grant, where is the series capacitor, before the un-un or between it and
the antenna?
Chuck W5PR
On Fri, Dec 2, 2022 at 7:53 PM Grant Saviers <grants2@pacbell.net> wrote:
> I've been using the 2:1 one for 7 years at QRO for a good match at the
> antenna as I don't have a tuner at the amp. I can match < 1.4:1 the
> entire band by switching in series capacitance in 50KHz steps to the
> 1.83 resonance.
>
> Grant KZ1W
>
> On 12/2/2022 13:05, 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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> >
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