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FRIDAY - JANUARY 17, 2003 - ISSUE NO. 49 |
Dear Friends and Industry Colleagues, Hello again to everyone interested in paging and wireless messaging. News this week from TGA Technologies, Inc. about an upgrade to their PRISM Paging Terminal. Last week I lamented about the use of FM subcarriers to transmit the information content of Microsoft's new initiative that they call SPOT (Smart Personal Object Technology). As promised, I have written a report on FM subcarrier paging, which follows. Once again, I want to thank everyone who has taken a moment to forward their copy of this newsletter to a friend or co-worker. My best source of breaking news continues to be from my readers who call me with: "Have you heard about. . . ?" Keep those tips coming in—for the benefit of us all. |
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WIRELESS NEWS | |||||||||||
Global Machine-to-Machine Communications Market Will Increase From $3.4 Billion in 2002 to More Than $28 Billion in 2007 Jan 14, 2003, 10:41am The market for wireless Machine-to-Machine applications, including hardware, software and services, is poised for explosive growth, according to a new Wireless Data Research Group report. The study found that wireless LAN based systems were the most significant contributor to the 2002 market total, due mostly to telemetry systems for Healthcare, totaling more than $1 billion of the $3.4 billion. Machine-to-Machine communication systems allow users to remotely monitor and control key business processes and functions via wireless-enabled devices, resulting in greater manageability and visibility in areas such as performance monitoring and management, plant operations, maintenance scheduling and even security. The same systems are also found in Smart Home and related consumer applications. Source: mBusinessToday Fight with computer brings SWAT team A 32-year-old Boulder man who had opened his apartment's patio door to enjoy Wednesday's unusually warm weather was later overheard screaming threats and seen waving what appeared to be a handgun, prompting a maintenance worker to call police. Officers, as a precaution, evacuated the man's apartment building and called SWAT officers to assist in defusing the situation. It turned out that the man was simply upset at his computer—which he had called a "bitch" he "wanted to kill," police said—and the gun was a plastic pellet gun, not the .45-caliber automatic handgun it was made to resemble. Source: dailycamera.com news The computer must have been running "Windoze" software. |
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TGA Technologies, Inc. |
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For further info: Barry
Kanne (barry@tga.com) |
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TONE & VOICE RETURNS TO PAGING1/14/2003Norcross, GA—TGA Technologies, Inc., the Norcross-based producer of high-capacity radio paging terminals announces the re-introduction of tone & voice paging as an available feature of its PRISM Paging Terminal. This new feature is in response to customer demand to support what has become a seemingly irreplaceable form of paging. "Over the years, TGA has added features to PRISM in support of new paging technologies, but this is the first time we have looked this far back to add improvement," says Barry Kanne, TGA’s president. "Tone & Voice has always played an important role with users who needed the entire message quickly or were not in a position to call in for the details of the message," he continued. The TGA PRISM also supports all the more modern digital paging formats such as: FLEX, Golay and POCSAG in addition to providing 2-tone and 5/6-tone + voice analog formats. Missed voice messages may be recovered from the internal voice message system by activating the "Page Assurance" feature for that subscriber. Messages are held on the voice message disk for a preset period to allow a paging user to call in and listen to messages that were previously sent. This same feature applies to numeric pages as well. The addition of tone & voice offers public safety and medical paging system users an opportunity to replace aging or outdated paging terminals with a modern design without having to discard their tried and true methods of communicating. For information contact Jim Nelson, TGA Technologies, Inc. (800) 998-8421, ext. 112 or by e-mail at sales@tga.com. -30- |
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TGA announces a Valentine offer we think you will love! 1. Come
to the TGA factory in Atlanta, see the PRISM paging terminal in action |
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SWEET Contact Jim or Barry at:(800) 998-8421 to schedule your visit to TGA. |
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A special discount is available to all members of The American Association of Paging Carriers (AAPC). As an immediate and tangible benefit of AAPC membership, a discount of 5% will apply to all orders placed for TGA PRISM paging terminals and encoders and deliverable by the end of April, 2003. Here is a great way to offset the cost of membership dues and upgrade your paging terminal system at the same time. Contact Jim Nelson (800) 998-8421, ext. 112 for details. WWW Consortium releases specs for wireless graphics Jan. 16, 2003 12:18 PM EST CAMBRIDGE, Mass.—The World Wide Web Consortium, which sets many of the technology standards for the Internet, released new specifications for graphics for handheld computers and mobile phones. The group released its new Scalable Vector Graphics version 1.1, which includes subsets for personal digital assistants and mobile phones. The SVG Tiny specification allows phones to display color animated multimedia messages, while SVG Basic gives PDAs the ability to render graphics based on the specifications. The SVG Working Group includes companies like BitFlash, Ericsson, Nokia Corp. and Openwave Systems Inc. Source: RCR Wireless News |
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REPORT ON SUBCARRIER PAGING | |||||||||||
I promised more information on subcarrier paging this week, so here goes. Following are some of my comments on the subject and then several links to more in-depth information if you are inclined to dig deeper into this topic. THE FEDERAL COMMUNICATIONS COMMISSION'S DEFINITION OF "SCA" SCA—Subsidiary
Communications Authority Source: FCC web site |
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WHY
I DON'T LIKE SUBCARRIER PAGING True, but very misleading. Let's keep it simple here. The little subcarrier paging signal riding "piggyback" on the big FM broadcast signal is no more powerful that one typical one-way paging signal. Paging, especially on 900 MHz has much better performance than FM broadcast, which is (above and below) 100 MHz. More on this issue follows ahead. Traditional paging companies use several thousand (5,000 or more each) transmitters to cover the major population areas of the USA while the Microsoft DirectBand™ system probably has little more than one transmitter in each of the 100 metropolitan areas that they "cover." So I think instead of calling this new Microsoft initiative SPOT for Smart Personal Object Technology, they should call it SPOTTY for the radio coverage that they are going to get. As far as I know, every commercial attempt at successful paging operations using FM subcarrier transmissions, has failed. It has been tried for may years, all over the world. There have been some very smart people behind these efforts, but the SCA approach has too many technical problems.
OK, I admit that deployment of a new, nationwide system using FM subcarrier cost them a fraction of what it would have cost using FLEX or ReFLEX, but you end up with something that is going to be a pain in the derriere forever. Simulcast
FLEX™ paging
on 900 MHz works better—and ReFLEX works even better! The combination of simulcasting and the characteristics of 900 MHz make, what I believe to be, the most reliable and effective way that we currently have to transmit wireless data. As you move around, you may be in an area where the signal from the nearest transmitter is blocked by an obstacle, like a large building, but then your pager can instantly pick up a different signal from another transmitter and you don't miss your message. Remember, in one-way paging systems, if you miss your message, it is lost forever (unless you use a TGA paging terminal). In two-way systems, if you miss your message, the system will keep on trying until your pager confirms receipt of the message—without errors. At 900 megahertz, radio waves behave very differently than they do on lower frequencies. They penetrate into buildings, go into tunnels and underground parking areas, and show up in areas where other radio signals are lost. What is this Microsoft DirectBand™ network? DirectBand™ will initially cover over 100 top metropolitan areas across all 50 U.S. states, plus the top 14 Canadian cities. Microsoft, along with key partners in the FM broadcasting industry, has created the DirectBand™ Network a unique, continuous broadcast network across the US and Canada. Taking advantage of FM radio subcarrier frequencies, Smart Personal Objects Technology-based devices are continuously updated with timely and relevant Web-based information. DirectBand makes your watches and other SPOT devices smarter and more useful for your location and your personal information needs. Source: Microsoft web site Cue—The Paging Network—what it once was CUE was founded in 1984 by Nokia Mobile Phones, the second largest manufacturer of cellular telephones in the world. In 1990, the company was purchased by Radio Satellite Network Corporation of Toronto. Today, the company offers nationwide, regional and local messaging, data services and real-time traffic information. CUE is the largest radio data network in the world with five times the geographical coverage of the next largest paging company. The network covers over 50,000 miles of interstate highways and over 95 percent of the population of Canada and the United States. CUE provides wireless messaging throughout North America over the FM subcarrier facilities of more than 600 radio stations. The network provides a seamless footprint covering more than two million square miles that serves over 170,000 subscribers. Source: http://www.losh.com/paging.html (This is outdated information.) Does anyone have a telephone number or an e-mail address for Gordon Kaiser, the former head of Cue Paging Network? Gordon is a great guy and I want to give him the opportunity to respond to these issues—if he wants to, and besides I haven't talked to him for a long time. |
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A BIBLIOGRAPHY OF ARTICLES ON SUBCARRIER TOPICS | |||||||||||
Swedish MBS Format (on BradDye.com) Radio Data System (RDS) Format (on BradDye.com) Technical Definition of Subcarrier Paging
Charlie Brown Rescued Snoopy with a Cue pager (from a 1988 Radio-Electronics magazine article) Subcarriers in F.M. Broadcasting (very good description) Another good description of SCA FM Subcarrier Standards Debate The RDS (Radio Data Systems) Technology Gap Intelligent Transportation Systems, Standards Fact Sheet or (PDF) |
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UNTIL NEXT WEEK | ||||||
PAGING | Best regards,
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Please save my new e-mail address.
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FLEX,
ReFLEX, InFLEXion, and PageWriter are trademarks or registered trademarks
of Motorola, Inc. CreataLink is a trademark of SmartSynch Communications Corp. This trademark was formerly owned by Motorola. |
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BACK TO THE PAGING INFORMATION RESOURCE |