[TowerTalk] High power 2:1 transformer was Re: 16om vertical and the number of radials
john at kk9a.com
john at kk9a.com
Fri Dec 2 19:58:37 EST 2022
At my P40A station I had an inverted L, the vertical portion was ~50 feet of
self supporting aluminum tubing. I never measured the impedance. I made a
hairpin coil using of a piece of THHN wire, adjusted the inverted L length
slightly and the SWR was very low.
John KK9A
Pete Smith N4ZR wrote:
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
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