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- Path: hpbs2500.boi.hp.com!usenet
- From: ahill@boi.hp.com (Andy Hill)
- Newsgroups: misc.consumers.house,sci.electronics.misc,comp.dcom.modems
- Subject: Re: 60Hz buzz on phone line & modem problems
- Date: Mon, 08 Jan 1996 19:52:40 GMT
- Organization: LaserJets by Bill & Dave
- Message-ID: <4crp5m$4fj@hpbs2500.boi.hp.com>
- References: <4cf1le$49d@guysmiley.blarg.net> <4ci0h9$jot@hpbs2500.boi.hp.com> <4ckauf$f5b@news1.deltanet.com>
- Reply-To: ahill@boi.hp.com
- NNTP-Posting-Host: hpbsl319.boi.hp.com
- X-Newsreader: Forte Free Agent 1.0.82
-
- aa-2@deltanet.com@deltanet.com wrote:
- >But one other thing to check is the type of wiring
- >used for the telephone jacks. It should be twisted pair for maximum
- >resistance to induced voltages. If your inside wiring is red/green/yellow/
- >black, it is not twisted pair, and it is much more susceptible to interference,
- >especially on long wire runs.
- >
- Is the twisted pair really significantly better? Shoot, the
- separation of the wires in the usual flat cable is pretty small - it
- doesn't seem like you'd get significant differential voltages induced
- when the wires are that close together. Of course, I'm far from a
- phone expert - I have no idea how many uV / mV/ V of differential
- voltage would result in audible hum in a typical phone...
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