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

[john at kk9a.com]

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