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- Path: sparky!uunet!news.miami.edu!wupost!emory!swrinde!network.ucsd.edu!news.acns.nwu.edu!telecom-request
- Date: 15 Nov 92 01:27:45 PST (Sun)
- From: john@mojave.ati.com (John Higdon)
- Newsgroups: comp.dcom.telecom
- Subject: Re: Private Lines, Bandwidth
- Message-ID: <telecom12.846.4@eecs.nwu.edu>
- Organization: TELECOM Digest
- Sender: Telecom@eecs.nwu.edu
- Approved: Telecom@eecs.nwu.edu
- X-Submissions-To: telecom@eecs.nwu.edu
- X-Administrivia-To: telecom-request@eecs.nwu.edu
- X-Telecom-Digest: Volume 12, Issue 846, Message 4 of 13
- Lines: 37
-
- Alan Boritz <72446.461@CompuServe.COM> writes:
-
- > AT&T, NY Tel, and just about every other telco in the US use *0 dBm*
- > as their nominal level transmission standard, NOT +8.
-
- > That's a hell of an example to set for a public radio station at an
- > educational institution: know your standards ... and ignore them.
-
- Decades ago, I was involved with a small classical station that had
- its studio in Los Gatos (GTE). We had just moved the programming
- operation from the transmitter site up on the hill and had 15KHz phone
- lines installed. From day one, the lines were nothing but trouble.
- They were muddy. They were unreliable. They had about 50 db loss. If
- you think GTE is incompetent now, you should have seen it back in the
- late sixties!
-
- Since the studio and the transmitter were "served" out of the same
- office, it would have seemed a simple matter for GTE to have provided
- decent circuits. But no. We managed to equalize the muddiness out
- ourselves. But the worst problem was the incessant "dialing clicks"
- that could be heard over the loudest fortissimo passages and that
- would raise one right out of his chair during the pianissimo segments.
-
- Our solution was unconventional. We impedance-matched a pair of Dynaco
- amplifiers to the phone lines at the studio end. Then we drove them at
- about the ten-watt level. This had the effect of pushing the dial
- clicks down about thirty decibels, but had the additional effect of
- leaking symphonic music into a number of telephones in the area. GTE
- was furious. So were we. It ended up being a standoff (GTE did not
- disconnect us; we did not go to the PUC) until the station was sold
- and the new owners bought a 950 MHz link to the studio and also began
- playing rock music.
-
-
- John Higdon <john@zygot.ati.com> (hiding out in the desert)
-
-