[Elecraft] Twisted Pair Wiring and RFI Rejection

2010-08-31 Thread Edward R. Cole
Message: 33 Date: Mon, 30 Aug 2010 08:11:09 -0700 From: Jim Brown j...@audiosystemsgroup.com Subject: [Elecraft] Twisted Pair Wiring and RFI Rejection To: elecraft@mailman.qth.net elecraft@mailman.qth.net Message-ID: 20100830151107.e8c1358...@gw1.nlenet.net Content-Type: text/plain; charset=us

Re: [Elecraft] Twisted Pair Wiring and RFI Rejection

2010-08-31 Thread Jim Brown
On Mon, 30 Aug 2010 23:08:34 -0800, Edward R. Cole wrote: I believe Cat-5e is isolated up to 100-KHz. In essence, the ability of twisted pair to reject HF noise is directly related to the number of twists per inch, and the uniformity of the twist. The close spacing of the twist also helps.

[Elecraft] Twisted Pair Wiring and RFI Rejection

2010-08-30 Thread Jim Brown
On Mon, 30 Aug 2010 10:14:14 +0100, David Woolley (E.L) wrote: That's another of Jim's suggestions that the UK amateur radio trade and RSGB shop have failed to take note of. I don't want to take credit for repeating fundamental principles that have been well understood for at least a century.