[CQ-Contest] "DX Special" by K1TR for 40M?

[Jim Brown]

On 3/22/2024 4:00 PM, john at kk9a.com wrote:
> W6NL wrote the following post and article on broadband dipoles:
> http://lists.contesting.com/archives/html/Towertalk/1997-11/msg00695.html
> https://www.arrl.org/files/file/QEX_Next_Issue/Nov-Dec2018/Leeson.pdf  

Dave told me about ten years ago when I asked if he minded that I wrote 
it up,that the concept was much older than him, and that he had been 
teaching it for years.

I went through the concept as part of a tutorial on using SimSmith for 
transmission line calcs, and for designing matching networks. It's here.

http://k9yc.com/PacificonSmithChart.pdf

There's another method of broadbanding that involves using sections of 
transmission line as part of the dipole. It was published in one of the 
very nice ARRL Antenna Compendiums. Over the years, I've acquired a set. 
I'd go look it up, but they're in an outbuilding with the shack, and 
it's raining a lot. :)  N6BV told me about 15 years ago that a lot the 
pieces in those books never made it to QST.

73, Jim K9YC