30 Years of the Digest ... founded August 21, 1981
The Telecom Digest for November 23, 2011
====== 30 years of TELECOM Digest -- Founded August 21, 1981 ======
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Date: Tue, 22 Nov 2011 03:35:58 -0600 From: Neal McLain <email@example.com> To: firstname.lastname@example.org. Subject: Re: Telephony on TV Message-ID: <4ECB6CFE.email@example.com> On Nov 1, 5:52 pm, David Clayton <dcstarbox-use...@yahoo.com.au> wrote: > I just finished watching an old TV show on DVD where the telephone > network was the prime factor in the show. It was the use of a > company "Tie Line" between San Francisco to Hawaii that gave away > the killer: > > I wonder if there are many other examples on TV or cinema of > reasonably obscure telephone technology being used in such an > important manner in a plot line? In Hitchcock's "The Trouble with Harry" (set in a small town in Vermont), Sheriff Calvin Wiggs (Royal Dano) interrupts a bridge game. Suspicious (correctly) that the bridge game is a staged setup to deflect his attention from what's actually happening, he plays along. But he's really there to use the old manual wall phone to call the state police. He picks up the receiver, waits for the local operator to answer, then asks for "Montpellier 2000." One of the bridge-game players recognizes the number and says, under his breath to the rest of the bridge players, "That's the State Police." It takes a few minutes for the local operator to get the call established. During this time, Wiggs makes small talk with the bridge party, stopping occasionally to answer questions from the operator. Neal McLain
Date: 22 Nov 2011 10:29:10 -0500 From: firstname.lastname@example.org (Scott Dorsey) To: email@example.com. Subject: Re: OT: Electronics store with classic parts Message-ID: <firstname.lastname@example.org> tlvp <mPiOsUcB.EtLlLvEp@att.net> wrote: >.. they were the tube complement in all the classic, el cheapo, AC/DC >superheterodyne table top sets of the early-to-mid '50s. Wait: maybe my >old RCA Receiving Tube Manual has a schematic? ... (comes back) ... YES: >12BE6, 12BA6, 12AV6, 50C5, 35W4 :-) ! Cf. p. 323 of RC-18, printed 9-57. Add an extra 12BA6 and an IF can, and a 6C5 for a BFO. Replace the 50C5 with a 35C5 to make up for the extra filament load. Take some winds off the loopstick to move it up to the shortwave bands. Voila, ham receiver for $10 or so. >'Zat what you were after, Bill? Or were you looking for the post-octal >follow-up to these (their miniature 9-pin counterparts)? Cheers, -- tlvp Those are the 7-and 9-pin minis. I don't remember the early octal ones, but they weren't quite as standardized. --scott -- "C'est un Nagra. C'est suisse, et tres, tres precis."
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