[TowerTalk] High power 2:1 transformer was Re: 16om vertical and the number of radials

[Grant Saviers]

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 at 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 at contesting.com> On Behalf Of Pete Smith N4ZR
> Sent: Friday, December 02, 2022 2:39 PM
> To: towertalk at 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>.
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> 
> 
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