In article ,
Tom Ring wrote:

OK, I did a search, unsuccessfully, on Topfkreis. What is it and
where do I find it?

I found these. Not in english, but it hardly matters.

http://membres.lycos.fr/arrad38/bido.../topfkreis.htm
http://f5jtz.club.fr/pjacquet/topkreis.htm

Also try Googling for "sperrtopf" or "sperrtof". Same basic idea...
a J-pole-like extended Zepp in which the matching section is a coaxial
sleeve.

--
Dave Platt AE6EO
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