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Topic: Line of sight telecommunications

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	Telecommunications
		Telecommunications line installers and repairers, one of the largest occupations, work in a variety of places, both indoors and outdoors, and in all kinds of weather.
		Although the telecommunications industry employs workers in many different occupations, 55 percent of all workers are employed in either office and administrative support occupations or installation, maintenance, and repair occupations (table 1).
		Telecommunications line installers and repairers often are hired initially as helpers, grounds workers, or tree trimmers who clear branches from lines.
	www.bls.gov /oco/cg/cgs020.htm (3981 words)

	[No title]
		A comparable line of sight, as illustrated in the figure below, allows a person using a wheelchair to see the playing surface between the heads and over the shoulders of the persons standing in the row immediately in front and over the heads of the persons standing two rows in front.
		Line drawing showing a side view of people seated in assembly-type seating and a person using a wheelchair seated in a wheelchair seating location behind the spectators.
		A dashed line illustrates that line of sight for the spectator using the wheelchair and other lines show the line of sight for seated and standing spectators.
	www.usdoj.gov /crt/ada/stadium.txt (1352 words)

	Glossary - Texas State Library
		bandwidth—commonly used to indicate how much, or how fast, data can be transmitted across a telecommunications line or network connection in a period of time, usually one second; used synonymously with data transfer rate, throughput, and line speed.
		ISDN lines are switchable and can be used as regular phone lines; they are primarily used to carry data traffic.
		line of sight, also radio line of sight—the visible, unobstructed path required to enable radio communications between two distinct access points.
	www.tsl.state.tx.us /ld/pubs/wireless/appendixa.html (1571 words)

	Communication Equipment - Stock Sectors and Industry Groups (Site not responding. Last check: 2007-10-14)
		The Telecommunications Transmission segment provides equipment and systems for satellite, over-the-horizon microwave, and wireless line-of-sight telecommunications systems, which are used in various commercial and defense applications, including the transmission of voice, video, and data over the Internet; long distance telephone; broadcast; cable; and highly secure defense applications.
		Its proprietary telecommunications test and measurement products enable telephone companies to use their existing line test systems to remotely diagnose problems in telephone service lines, and qualify and troubleshoot broadband digital subscriber lines.
		Tollgrade's telecommunications test products include Metallic Channel Unit, which enables customers to extend line testing capabilities from the copper to the fiber optic portions of the local loop; and DigiTest and LoopCare, which electronically measure the characteristics of a telephone copper circuit, analyze the data, and report the fault condition.
	www.trending123.com /Communication_Equipment.htm (12092 words)

	TELECOMMUNICATIONS
		The telecommunications subsystem provides voice, television, telemetry, and tracking and ranging communications between the spacecraft and earth, between the CM and LM, and between the spacecraft and astronauts wearing the portable life support system.
		For convenience, the telecommunications sum system can be divided into four areas: intercommunications (voice), data, radio frequency equipment, and antennas.
		Most of the components of the telecommunications subsystem are produced by the Collins Radio Co., Cedar Rapids, Iowa.
	www.apollosaturn.com /asnr/p173-188.htm (6351 words)

	Model Wireless Telecommunications Facilities Ordinance
		Approval by the PB is required for any expansion of an existing wireless telecommunications facility that increases the height of the facility by no more than 20 feet; accessory use of an existing wireless telecommunications facility; or colocation on an existing wireless telecommunications facility.
		Each photo must be labeled with the line of sight, elevation, and with the date taken imprinted on the photograph.
		Setbacks: A new or expanded wireless telecommunications facility must comply with the set back requirements for the zoning district in which it is located, or be set back one hundred five percent (105%) of its height from all property lines, whichever is greater.
	www.state.me.us /local/androscoggin/wales/documents/WalesTelecom.htm (3544 words)

	Scenic America :: History of Telecommunications Towers
		In 1844, Samuel Morse built the first successful electrical telegraph line laying the groundwork for a network of 30-foot poles that would mark the margins of roads and railroads throughout the nation before the end of the century.
		In their place was guidance noting that such aesthetic issues are best handled by local planning and zoning authorities and yet a decade later, the Telecommunications Act eliminated many local barriers to increased infrastructure.
		Within four years of Congress passing the Telecommunications Act of 1996, the FCC was pushed by historic preservation interests to explore how to best comply with the NHPA.
	www.scenic.org /towers (1003 words)

	Chapter 7 - Telecommunications Handbook for Transportation Professionals
		Each user has their own set of requirements which a unique (in overall design) telecommunications system is required to support.
		With the expansion of the number of CCTV cameras and the provisioning of video links to additional agencies, the analysis was expanded to include consideration of the communication requirements necessary to interface with these centers.
		The department recognized the need to provide a telecommunications infrastructure to support the plan, and the construction of a private fiber optic communications network was considered.
	ops.fhwa.dot.gov /publications/telecomm_handbook/chapter7.htm (3523 words)

	Guidance system - Wikipedia, the free encyclopedia
		The use of an encoded signal reduces the threat of jamming as well as reducing interference in high-noise combat environments.
		The primary limitation on this device is that it requires a line of sight to the target from both the munition and the designator.
		More advanced systems use the laser to designate a target, which is acquired by an orbiting satellite that then feeds GPS target data to a launch facility.
	en.wikipedia.org /wiki/Guidance_system (752 words)

	ESA - Telecommunications - About Telecommunications
		There are many types of telecommunication satellites and they vary in design according to their purpose.
		A telecommunication satellite in low Earth orbit will appear in the west and move towards the east, being visible for about 10 minutes at a time.
		European industry and European telecommunication operators are at the forefront of this huge international market thanks in part to the vision of ESA and the effort the Agency and its Member States have put into developing new technology and satellite systems over the past three decades.
	www.esa.int /esaTE/GGGATV50NDC_index_0.html (1827 words)

	Telecommunications - Stock Sectors and Industry Groups (Site not responding. Last check: 2007-10-14)
		The company's telecommunications services include the provision of transponder capacity for private communications networks for data and voice communications and the provision of public switched telephone network carrier services, including the wholesale voice to telecom network operators and other communications service providers in Asia.
		Its payment product line consists of PayExtend and Payment Manager, which offer wireless operators the ability to deploy and manage recharge options to their subscribers—whether cash, debit or credit card-based—that can be accessed at automated teller machines, self-serve kiosks, retail stores, via the Internet, and directly from subscribers' handsets.
		The T-Systems division also builds and operates telecommunications networks and other related telecommunications services; provides information technology services, including consulting, solution implementation, software and platform development, re-engineering, migration, and application lifecycle management; offers data centers operation, application management, user support, and network management services; and develops and implements office systems solution.
	www.trending123.com /Telecommunications.htm (12110 words)

	Line-of-sight propagation - Wikipedia, the free encyclopedia
		Therefore, as the ability to visually sight a transmitting antenna (with regards to the limitations of the eye's resolution) roughly corresponds with the ability to receive a signal from it, the propagation characteristic of high-frequency radio is called "line-of-sight" as per radiowave propagation is called as "radio horizon".
		In practice, the propagation characteristics of these radio waves vary substantially depending on the exact frequency and the strength of the transmitted signal (a function of both the transmitter and the antenna characterics).
		This is caused by diffraction effects: for the best propagation, a volume known as the first Fresnel zone should be kept free of obstructions.
	en.wikipedia.org /wiki/Line_of_sight_(telecommunications) (520 words)

	Association of Indepedent Telecommunications Managers - Who We Are Page
		We consistently find we are able to attain the identical service, with whatever carrier you request at a lower cost per minute than they will quote you directly, simply because of our telecom manager's combined client buying volume.
		Every single service provider in the telecommunications industry has both a in-house sales department for which they are required to pay salaries, office expenses, training, benefits, etc...
		Last, but not least, we will aid in insuring your telephone line add, changes, deletes, billing disputes, audits, and most other telecom related questoins are answered.
	telecommanagers.com /whowe.htm (511 words)

	Line of Sight Lasers
		The solutions from Advantex Network Solutions are cost-effective, reliable and offer point-to-point connection between telecommunications equipment and computer network devices through free space.
		The system uses laser technology to transmit information between 2 points, which have a clear 'line of sight' between them.
		The transparent and wire speed data transfer together with virtually zero latency makes the technology ideal for today and tomorrows demanding data, voice and telecommunications applications.
	www.advantex.uk.com /line.htm (121 words)

	Omnidirectional antenna with hollow point source feed - Patent 4825222
		One application of omnidirectional antennas in telecommunications technology is concerned with point-to-multipoint radio systems in which a single station, usually called the node, communicates with many customers all within line-of-sight but scattered in random directions and distances around the node.
		Here the power splitter network 22, point source array 20, and the ground plane 21 may be made in one photolithographic operation on flat flexible double-sided copper clad dielectric substrate which can be roller into a cylinder or cone.
		The power splitter is made from assymmetrical stripline and symmetrical T-junctions with identical power coupling and electrical line length from the input port 23 to each patch antenna.
	www.freepatentsonline.com /4825222.html (3416 words)

	A Small Look At Wireless Networking - Computer Networks
		The presence of wireless services has no doubt illustrated the progression of technology and a new era of telecommunications.
		Though wireless technologies have been used for more than a century, in the form of radios, it birth actually took place in the 19th century when “the father of radio”, Guglielmo Marconi, introduced wireless technology to the world.
		This bi-directional star topology consisted of seven computers spread out among the four islands to communicate with a computer located on the island of Oahu without the use of telephone lines.
	www.bellaonline.com /articles/art3140.asp (857 words)

	UN-NGLS Publications: @ Ease with Email
		The telephone line is only busy when it is actually being used by the modem.
		Packet radio is another way to exchange e-mail between two points, as is a line of sight microwave connection.
		They can connect remote provinces in countries where the telecommunications infrastructure is poor or nonexistent.
	www.unsystem.org /ngls/documents/publications.en/email/at.06.htm (939 words)

	Apparatus and methods for in-space satellite operations - Patent 5806802
		rapid deterioration of the solar cells or telecommunication disks, to effect the degradation and eventual failure of the target satellite.
		These divert thrusters 33 are aligned along the line of sight from the service module 12 toward the target satellite.
		Preferably, this image can be turned on and off to allow the pilot to superimpose the nominal location and the orientation of the target satellite at any given time between the beginning of the approach until SIRE and satellite engagement.
	www.freepatentsonline.com /5806802.html (4829 words)

	Homeland Security Stocks and Investments
		The telecommunications transmission segment, which is the Company's largest business segment, provides sophisticated equipment and systems for satellite, over-the-horizon microwave and wireless line-of-sight telecommunications systems.
		With the implementation of our feature product line, the War-Lok Series, Gabriel Technologies partners with customers to help apply the proper security measures to the risks they are concerned with reducing.
		The company's comprehensive line of products is used by workers around the world in the fire service, homeland security, construction and other industries, as well as the military.
	www.twotigersonline.com /research/HSStocks.htm (11576 words)

	The Telecommunications Programme
		As to the second objective, this needs to be addressed in a variety of ways, including maintaining close relationships with operating entities to assess their future needs and carrying out pilot missions in order to continue to prove the benefits and capabilities of satellite communications.
		In addition to the mission-specific projects, a general set of market-driven developments must be foreseen in parallel to support industry in maintaining a state-of-the-art position in all critical areas of space communications, with the view to capturing a higher share of today s, and tomorrow s, World market.
		The future Universal Mobile Telecommunication Systems (UMTS) will expand the range of services offered by the first-generation mobile system, which are limited to voice telephony and low-speed data services.
	esapub.esrin.esa.it /br/br114/br114tel.htm (1884 words)

	Model Wireless Telecommunications Facilities Bylaw
		Where the construction of new wireless telecommunications towers and facilities requires construction of or improvement to access roads, to the extent practicable, roads shall follow the contour of the land, and be constructed or improved within forest or forest fringe areas, and not in open fields.
		Utility or service lines shall be designed and located so as to minimize or prevent disruption to the scenic character or beauty of the area.
		Ground mounted equipment or antennas as well as buildings and structures accessory to a tower shall be screened from view by suitable vegetation, except where a design of non-vegetative screening better complements the architectural character of the surrounding neighborhood.
	www.vapda.com /bylaw/bylaw4.htm (787 words)

	The Status of Telecommunications Competition in California
		Section 316.5 requires that the CPUC report annually on the status of competition in the telecommunications marketplace, significant changes that have occurred in the previous year, and statutes that should be amended, repealed, or enacted to promote competition.
		Last year the Legislature passed SB 1563, which amended the telecommunications policy goals in the Public Utilities Code to focus more on providing access to advanced telecommunications services for the state's educational, health and government institutions, and for the state's rural, inner city, low income and disabled citizens.
		An overview of the report methodology and telecommunications industry contextual information follows, including the mandate for this report, the markets studied, the types of telecommunications competitors, the market structure that has arisen from state and federal regulatory actions, and the customer segments that were studied.
	www.cpuc.ca.gov /PUBLISHED/REPORT/31223.htm (11691 words)

	Insight Research - Satellite Communications for the Next Century: Global Markets for GMPCS,LEOs, MEOs, and GEOs ... (Site not responding. Last check: 2007-10-14)
		The hard reality of telecommunications services today is that the world currently consists of islands of sophisticated terrestrial network infrastructure which serves less than 40 percent of the world’s population.
		The hard reality of telecommunications services today is that the world currently consists of islands of sophisticated terrestrial telecommunications network infrastructure, located primarily in North America, Western Europe, and the Pacific Rim, which serves less than 40 percent of the world’s population.
		The challenge for telecommunications industry decision makers is to identify, select, and integrate the best of breed terrestrial and celestial organizations into a world class company, capable of addressing the telecommunications services requirements of customers ranging from individuals in undeveloped regions to major multinational corporations.
	www.insight-corp.com /reports/satellite.asp (1744 words)

	Chapter 8 - Telecommunications Handbook for Transportation Professionals
		The electrical power lines are always placed at the top of the pole.
		The path may have to be realigned to avoid some of the utilities, or a proposal developed to temporarily interrupt service and then repair the damaged utility lines.
		These publications are based on existing telecommunications industry practices and are available to the general public via the internet.
	ops.fhwa.dot.gov /publications/telecomm_handbook/chapter8.htm (6129 words)

	Comtech Telecommunications (CMTL) Profile and SEC Filings
		The Company's principal activity is to manufacture and market sophisticated wireless telecommunications transmission products and solid state high-power broadband amplifiers for commercial and government purposes.
		The activities are carried out through three segments: Telecommunications Transmission, RF Microwave Amplifiers and Mobile Data Communications Services.
		Telecommunications Transmission provides sophisticated equipment and systems for satellite, over-the-horizon microwave and wireless line-of-sight telecommunications systems.
	www.investorguide.com /stock-profile.cgi?ticker=CMTL (338 words)

	Bridging the Gap: Understanding the fundamentals of distance learning is the key to tapping this lucrative market.
		The cost to have these high-speed digital lines installed and maintained was high with respect to the rate of return on use.
		Many things, such as line of sight and fluorescent lights, can affect the infrared units.
		ITU (International Telecommunications Union): One of the specialized agencies of the United Nations and founded in 1865 before telephones were invented as a telegraphy standards body.
	svconline.com /mag/avinstall_bridging_gap_understanding (4173 words)

	Model Wireless Telecommunications Facilities Bylaw
		It shall indicate the property lines of the proposed facility site parcel and all easements or rights of way needed for access from a public way to the facility.
		The proposed antennas and equipment would exceed the structural or spatial capacity of the existing or approved tower or facility, as documented by a qualified engineer licensed to practice in the State of Vermont.
		Existing or approved towers and structures cannot accommodate the planned equipment at a height necessary to function reasonably or are too far from the area of needed coverage to function reasonably as documented by a qualified engineer.
	www.vapda.com /bylaw/bylaw3.htm (613 words)

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