---------------------------------------------------------------------- Message-ID: <20191129183211.GA23055@telecom.csail.mit.edu> Date: Fri, 29 Nov 2019 18:32:11 +0000 From: Bill Horne <bill@horneQRM.net> Subject: Re: History Western Union Telex ads On Wed, Nov 27, 2019 at 01:27:01PM -0800, HAncock4 wrote: > On Wednesday, November 27, 2019 at 10:34:36 AM UTC-5, Bill Horne wrote: > > Ultimate trivia: how many separate symbol combinations are used in the > > version of Murray code employed for Telex, and why? > > According to the WU Technical Review, there were different variants of > the Baudot code used in different applications. For example, certain > uses had fractional symbols. Another use had weather symbols. It > didn't really matter as long as the keyboard and typebars of the > sending and receiving machines were coordinated. Sorry, I didn't write my question clearly. I wasn't asking about changing keytops and type pallets, which would IIRC be at the "Presentatin" layer of the OSI Reference model: I don't doubt that it was commonplace, but (again, IIRC) I was asking about the "MAC" layer. There are 32 combinations of bits available from a 5-unit code such as Baudot/Murray. They weren't all used, though, at least in the CCITT #2 alphabet, and I'd like to know why. Bill -- Bill Horne (Remove QRM from my email address to write to me directly) ------------------------------ Message-ID: <AADEEFF7-D948-4297-AC71-E405AAF01443@roscom.com> Date: 26 Nov 2019 22:47:11 -0500 From: Monty Solomon <monty@roscom.com> Subject: Verizon's new 5G coverage maps show just how sparse the network is Verizon maps show small pockets of 5G, and 4G everywhere else. By Jon Brodkin Verizon has continually touted its rollout of 5G as it reaches more cities with the latest cellular technology, but new coverage maps confirm what consumers have experienced: Verizon's 5G network is only sparsely deployed even in major cities. https://arstechnica.com/information-technology/2019/11/verizons-new-5g-coverage-maps-show-just-how-sparse-the-network-is/ ------------------------------ Message-ID: <8EED7456-CB0A-41B0-A14C-196EA64B0062@roscom.com> Date: 26 Nov 2019 22:46:34 -0500 From: Monty Solomon <monty@roscom.com> Subject: Scammers try a new way to steal online shoppers' payment- card data Scammers try a new way to steal online shoppers' payment-card data By Dan Goodin Skimmers host fraudulent third-party processor that looks just like the real thing. Thieves have devised a new way to steal payment-card data from online shoppers - or at least it's new to the researcher who found it. Rather than infecting a merchant's checkout page with malware that skims the information, the thieves trick users into thinking they've been redirected to an authorized third-party payment processor. https://arstechnica.com/information-technology/2019/11/scammers-try-a-new-way-to-steal-online-shoppers-payment-card-data/ ------------------------------ Message-ID: <F8D0D1F5-03A2-4DB0-B3B3-9382B3C96A4F@roscom.com> Date: 26 Nov 2019 22:44:02 -0500 From: Monty Solomon <monty@roscom.com> Subject: At launch, AT&T's real 5G will only be as fast as its fake 5G 5G on low-band spectrum will be similar to LTE-Advanced until further upgrades. By Jon Brodkin AT&T will soon offer 5G mobile service on its 850MHz spectrum, which will enable wider coverage than existing 5G networks but offer only 4G-like speeds at launch. Significant speed increases will arrive in 2020, AT&T says. https://arstechnica.com/information-technology/2019/11/at-launch-atts-real-5g-will-only-be-as-fast-as-its-fake-5g/ ------------------------------ ********************************************* End of telecom Digest Sat, 30 Nov 2019