[TowerTalk] cable capacitance

[Jim Jarvis]

Message: 4
Date: Mon, 11 Jun 2007 14:56:13 -0400
From: Jim Jarvis <jimjarvis at optonline.net>
Subject: Re: [TowerTalk] twisted pair capacitance

DUH...I'm completely wrong.  What is reduced is crosstalk
between pairs.  Brain cramp. Sri.  EA


Tom's right.  What you were thinking of is telco cable, 
where the pairs are twisted for a distance, then twisted 
in the REVERSE direction for an equal distance.  the result
is that at audio frequencies, the net capacitance is reduced.
n2ea


Message: 8
Date: Mon, 11 Jun 2007 14:46:44 -0400
From: "Tom Rauch" <w8ji at contesting.com>
Subject: Re: [TowerTalk] SteppIR cable capacitance (was: SteppIR
	problem)
To: <wc1m at msn.com>, "'W5LT'" <W5LT at tx.rr.com>,
	<towertalk at contesting.com>
Message-ID: <013e01c7ac58$e1f926d0$640fa8c0 at radioroom>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
	reply-type=original

> with a heavy braided shield around the entire bundle. If 
> I'm not mistaken, a
> twisted pair reduces the amount of capacitance between the 
> wires in the
> pair.


Twisting always increases capacitance between pairs. Haven't 
you ever used a gimmick capacitor??  :-)



Jim Jarvis, President
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