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Re: just a note

Posted by Jon Risch on April 23, 1999 at 20:23:38:
[ BTW, how do you keep the Capacitance down along your coaxial cable & between HF shield and LF core of opposing polarities. ]
When connected in cross-connected fashion, Belden 89259 has approx. 48 pF per foot. Two coaxial 89259 cables with 17.3 pF per foot connected in parallel, but separated by some distance, will run twice the nominal, or about 35 pF per foot. The cross-connection actually increase the capacitance still further to the 48 pF value, but since it starts out so low, and remains at a modest value, the decrease in inductance that it enables is well worth the tradeoff.
Essentialy, it starts out very low, and never gets up that high even after cross-connecting the two coaxes.
Jon Risch