Topband: Homebrew capacitors

[Jim GM]

Could have saved more money with a Piece of RF-9913 or RG8 coax cable about
25pF per foot plenty voltage rating.


Only thing can some one please help me on this, do I connect the center
conductor on one end of the cable and use the shield on the other end? Or
just use the  center conductor and shield on one end, while the other end
are floating not used and not tied together?
Diagram below 0= connection point.

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OR

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Jim K9TF