31 Years of the Digest ... founded August 21, 1981
The Telecom Digest for July 11, 2013
====== 31 years of TELECOM Digest -- Founded August 21, 1981 ======
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Date: 10 Jul 2013 09:26:51 -0400 From: firstname.lastname@example.org (Scott Dorsey) To: email@example.com. Subject: Re: Remedies for Better Cellphone Signal and Quality Message-ID: <firstname.lastname@example.org> In article <MPG.email@example.com>, T <firstname.lastname@example.org> wrote: >In article <20130705051401.GA17423@telecom.csail.mit.edu>, >bill@horneQRM.net says... >> Oh, Ghod, that's just so far off the road that Bambi is running away >> at this very moment. The "predecessor" to cellphone voice calls was >> IMTS, which had all the problems associated with connecting a RADIO >> to a telephone line, coupled with the impedimenta of a trunk-mounted >> transceiver, a roof mounted antenna, and a gargantuan control head >> that took up more space than a CB set, and a special alternator to >> handle the current drain. > >This part amuses me. I've installed a number of mobile amateur radio >rigs. One of the first rules is to wire directly to the battery and >bypass the alternator. And both leads get fused in that setup. As I recall, the original MTS system used an alternator with multiple windings, including a high voltage winding to generate the B+ for the final tubes. I don't know about IMTS. --scott -- "C'est un Nagra. C'est suisse, et tres, tres precis."
Date: 10 Jul 2013 09:28:11 -0400 From: email@example.com (Scott Dorsey) To: firstname.lastname@example.org. Subject: Re: Remedies for Better Cellphone Signal and Quality Message-ID: <email@example.com> John Levine <firstname.lastname@example.org> wrote: >>Remember the Sprint "pin drop" TV ads? Could a cellular company >>differentiate their service by offering quality audio? > >Yes. Would enough people be willing to pay for it to make it a viable >business? Don't be silly. People in Europe would be. In fact, there is a "low compression" service specifically available in much of Europe. >You can get much better audio quality at the cost of higher latency >using applications like Skype. I gather that LTE audio is all VoIP >underneath, so maybe there'll be a button you can adjust. The latency drives me up the wall just as much as the compression artifacts. Still, it's weird listening to music on hold and not being able to tell what it is. --scott -- "C'est un Nagra. C'est suisse, et tres, tres precis."
Date: Wed, 10 Jul 2013 11:07:44 -0700 (PDT) From: Joseph Singer <email@example.com> To: firstname.lastname@example.org. Subject: Re: Software as a Monthly Rental Message-ID: <1373479664.32847.YahooMailNeo@web121402.mail.ne1.yahoo.com> Sat, 6 Jul 2013 00:27:00 +0000 (UTC) Rich Greenberg wrote: > If you have a need for Photoshop but don't want to pay Adobe's > rates, I recommend Irfanview (www.irfanview.com) to anyone needing > an inexpensive image editor (its shareware with a suggested donation > of 10 euros (approx 13 USD)). The author provides good email > support to registered users. For Mac there's also Graphic Converter (for both Mac and Windows) which is a shareware program http://www.graphicconverter.net/ For Mac and Windows there's also gimp for Windows and Mac. http://www.gimp.org
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