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- Path: sparky!uunet!caen!uwm.edu!csd4.csd.uwm.edu!info-high-audio-request
- From: gasco!eeh@uunet.UU.NET (Eric Hutchinson x1589)
- Newsgroups: rec.audio.high-end
- Subject: Re: Cable TV Causes Stereo Hum
- Date: Tue, 17 Nov 1992 00:52:01 GMT
- Organization: Northwest Natural Gas Company of Portland Oregon
- Lines: 22
- Approved: tjk@csd4.csd.uwm.edu
- id <m0mrHWN-000UNjC@qiclab.scn.rain.com>; Mon, 16 Nov 92 17:14 PST
- id <m0mrHAi-0009zRC@gasco.com>; Mon, 16 Nov 92 16:52 PST
- Message-ID: <1eatg5INN46b@uwm.edu>
- References: <1e89heINNjsd@uwm.edu>
- NNTP-Posting-Host: 129.89.7.4
- Originator: tjk@csd4.csd.uwm.edu
-
- In article <1e89heINNjsd@uwm.edu>, Scott Dorsey <kludge@grissom.larc.nasa.gov> writes:
- > About all you can do about this kind
- > of noise is to install an isolation transformer in the line so that the
- > shield of the TV set is floating with respect to the shield of the cable.
- > Take two 75-300 ohm transformers (available for free from your cable TV
- > office if you ask nicely) and tie the two 300 ohm sides together. Connect
- > the TV to one of them, then connect the cable to the other.
- > --scott
- >
-
- This appears to work only if you isolate all of your cable connections. I have
- one incoming cable line that splits for *home run* conections to five locations.
- Isolating the connection for the main tv still allowed the feed back to the
- stereo and vcr. The only way around this appears to be isolating the main
- incoming line before it splits to the five outlets. All of the equipment shares
- the same main ground and so each must be isolated if connected to cable.
-
- Eric Hutchinson
- eeh@gasco.com
-
-
-
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