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Topic: Teletypewriter

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	Teletypewriter (Site not responding. Last check: 2007-10-08)
		Two teletypewriters were connected in series at each end of the line, so that the same current passed through both, and the line was normally held in a marking state.
		A typical teletypewriter circuit had a current of about 60 mA, and was supplied by 110 VDC sources.
		Teletypewriters could be connected in a normal ground-return circuit between the center taps at the two ends.
	www.du.edu /~jcalvert/tel/teletype.htm (2866 words)

	Timeline: From the April 2, 1932 issue, Science News Online, April 6, 2002 (Site not responding. Last check: 2007-10-08)
		It is now possible to use teletypewriters, formerly restricted to specialized fields, in either the home or the office after the manner of a telephone.
		Teletypewriters transmit typewritten messages electrically so that whatever is typed at one end of the circuit is typed simultaneously at the distant end.
		The hub of the teletypewriter service, recently inaugurated by the American Telephone and Telegraph Company, is the familiar switchboard operator, who, however, has a typewriter before her instead of a telephone set.
	www.sciencenews.org /articles/20020406/timeline.asp (1958 words)

	Military Equipment List (Part 5)
		Teletypewriter set, Keyboard/Transmitter-distributor and Printer/paper tape, 20/60 ma local loop or 30 ma polar, full or half duplex, 60, 66, 75 or 100 wpm, 95-125 or 190-250 VAC 60 Hz, 192 Lbs, TM 11-5815-244-12.
		Teletypewriter set, Keyboard/Transmitter-distributor and Printer/paper tape, 20/60 ma local loop or 30 ma polar, full or half duplex, 60, 66, 75 or 100 wpm, 95-125 or 190-250 VAC 50-60 Hz, 192 Lbs, TM 11-5815-244-12.
		Teletypewriter set, Solid state, Keyboard and Printer, 20/60 ma loop or 20 ma polar, full or half duplex, 60, 100 or 200 wpm, 105-125 VAC 60 Hz, 109 Lbs, Major component: TT-512, TM 11-5815-306-12.
	www.nj7p.org /millist/m5.html (3847 words)

	System for controlling polarity state of start-stop telegraph signal train - Patent 4045614 (Site not responding. Last check: 2007-10-08)
		Accordingly, since the input Teletype signal train applied to the teletypewriter is compulsorily reversed, the polarity of the signal train is restored to the correct polarity state and consecutive erroneous letters can be prevented from being printed by the teletypewriter.
		The values of N and M are selected optimum in consideration of the element error rate in the transmission line and the probability of the polarity reversal of the signal train due to the phase ambiguity of the input PSK wave in the demodulator on the receiving side.
		The repetition cycles of the clock pulses and the number of stages of the register 8-1 are determined so that each of the pulses k.sub.1 and k.sub.2 are successively delayed by a period of a predetermined number of characters from the pulse (j) or the first pulse k.sub.1.
	www.freepatentsonline.com /4045614.html (3972 words)

	Telegraphy - Wikipedia, the free encyclopedia
		With the invention of the teletypewriter, telegraphic encoding became fully automated.
		It had the cheapest teletypewriters that could be adapted to the TWX code.
		The model 33 was the cheapest teletypewriter available for use with computers.
	en.wikipedia.org /wiki/Telegraph (2500 words)

	revrul86-36 (Site not responding. Last check: 2007-10-08)
		Amounts paid by a lessee for the lease of a teletypewriter terminal are not subject to the communications tax imposed by section 4251 of the Code.
		The payments are not subject to the tax because the lease of the terminal does not provide access to a teletypewriter exchange system on the privilege of intercommunication with all persons constituting a part of the same teletypewriter exchange system.
		Amounts paid by a lessee for the lease of a teletypewriter terminal are not subject to the communications excise tax imposed by section 4251 of the Code.
	www.taxlinks.com /rulings/1986/revrul86-36.htm (328 words)

	Tactical Teletypewriter Set (Site not responding. Last check: 2007-10-08)
		A tactical teletypewriter set from every standpoint MITE designed AN/TGC-14A(V) is the first miniaturized mobile send-receive teletypewriter designed specifically for military employment.
		The MITE AN/TGC-14A (V) is a modular constructed assembly consisting of a receiving and printing unit, a keyboard transmitter, a connecting electrical chassis, an immersion-proof or one of several special purpose carrying cases, shock mounts and connecting cables specifically designed and fully qualified to MIL-E-16400 and MIL-T-23330 (MC).
		The MITE TT-264/AG, TT-299A/UG and TT-3951UG teletypewriters are lightweight, miniaturized, transmitting and receiving, page printing, telegraph sets, specifically designed for use in air to air or ground to ground; shipboard and submarine; and general communication use respectively.
	www.rtty.com /development/teletype/mite (433 words)

	revrul73-401
		These articles are sold or leased to customers who use the equipment in connection with local telephone service, teletypewriter exchange service, or private communication service, provided by communications companies unrelated to the companies selling or leasing the equipment.
		The lease payments in Situation 1 are amounts paid for equipment provided in connection with a taxable communications service, and, therefore, the tax imposed by section 4251 of the Code applies to "amounts paid" for the use of the equipment.
		It should be noted that amounts paid for a private communications service that is provided with a taxable communications service is not exempt from the tax unless a separate charge is made for the private service as provided in section 4252(d) of the Code.
	www.taxlinks.com /rulings/1973/revrul73-401.htm (733 words)

	Tipsheet: How to Use a TTY (Site not responding. Last check: 2007-10-08)
		The teletypewriter, or TTY, is a device that lets deaf and hearing people type back and forth using regular telephone lines.
		Teletypewriters were used for many years by news organizations and businesses.
		In the 1960's, these teletypewriters were modified for use by deaf people.
	www.netac.rit.edu /publication/tipsheet/TTYa.html (548 words)

	Control device of a teletypewriter to be used by invalids - Patent 4048439
		A device as claimed in claim 1, in which said characters are displayed in boxes arranged in said lines and columns, there being diphthongs in certain of said boxes.
		The present invention has for its object a control device for a teletypewriter to be used by invalids.
		The present invention has for its object a control device for a teletypewriter to be used by invalids which permits a much greater printing speed.
	www.freepatentsonline.com /4048439.html (1496 words)

	teletypewriter - a Whatis.com definition
		A teletypewriter (TTY) is an input device that allows alphanumeric character to be typed in and sent, usually one at a time as they are typed, to a computer or a printer.
		The Teletype Corporation developed the teletypewriter, which was an early interface to computers.
		Basically, this is a one-character-at-a-time mode of sending, receiving, or handling data, although it is often modified to handle a line of characters at a time.
	whatis.techtarget.com /definition/0,,sid9_gci213663,00.html (259 words)

	Introduction to CSMA/CD: A Teletypewriter Analogy (Site not responding. Last check: 2007-10-08)
		Perhaps the earliest demonstration of Ethernet LAN concepts occured with the implementation of teletypewriter "orderwire" circuits.
		Later, teletypewriter technology advanced to a point where unique character strings could be sensed by the device, sounding an audible alarm.
		First of all, each teletypewriter address must be unique to the system, or else the operator will have to service messages not destined for them.
	telecom.tbi.net /simlan.html (568 words)

	- Vodafone first to introduce successor to the teletypewriter (Site not responding. Last check: 2007-10-08)
		Vodafone is the first mobile operator in The Netherlands to introduce the successor to the teletypewriter.
		One and a half million Dutch people are either deaf or hard-of-hearing; some 200,000 suffer from a hearing impediment of a severity such that they cannot use a normal telephone.
		Until now this group had to resort to a teletypewriter for their communications, i.e.
	www.vodafone.com /article_with_thumbnail/0,3038,CATEGORY_ID=210&LANGUAGE_ID=4&CONTENT_ID=216738,00.html (569 words)

	History Of Teletype Development HISTORY OF TELETYPEWRITER DEVELOPMENT (Site not responding. Last check: 2007-10-08)
		The success of the modern teletypewriter began with Howard L. Krum's conception of the start-stop method of synchronization for permutation code telegraph systems.
		The purpose of this paper is to provide a brief historical account of events which led to that achievement and of those which ensued.
		The 10-A teletypewriter was the first embodiment of such basic design features of the 15-Type printer as stationary platen, moving type basket, and selector vane assembly, but the majority of improvements incorporated in the 15-Type were proprietary to the Teletype Corporation.
	www.kekatos.com /teletype/History_Of_Teletype_Development_2.htm (3537 words)

	TELETYPEWRITER MESSAGE TRANSMISSION
		Two of the codes the Navy uses are found in manual telegraphy and in teletypewriter operation.
		telegraphy and is universally used in teletypewriter operation.
		The most common mode used in teletypewriter operation is the start-stop mode.
	www.tpub.com /content/neets/14189/css/14189_89.htm (539 words)

	History Of Teletype Development HISTORY OF TELETYPEWRITER DEVELOPMENT
		Telegraph circuits permitted customers to send to each other a printed or hard copy version of the information at reasonable cost, which was impractical with the telephone.
		The teletypewriter converted the message to a coded signal which was sent out on the local loop to the STC and central office equipment.
		There the signal was converted to make it compatible with the carrier's lines and sent on to the STC serving the distant city.
	www.thocp.net /hardware/history_of_teletype_development_.htm (3478 words)

	Electronics 56 (Site not responding. Last check: 2007-10-08)
		In another place, the classic mechanical, Baudot-code teletypewriter is described.
		The emulator could send to a mechanical teletypewriter, or receive from one, if this is desired, but the main reason for considering this exercise is that it involves a lot of interesting and instructive lore about commonly-found devices, such as keyboards and printers, and confronts the problems of code translation and interface handshaking as well.
		The received code from the UART must be translated back into ASCII, and sent to the printer, each character followed by flushing the buffer, unless it is satisfactory to wait for a CR before a line is printed.
	www.du.edu /~etuttle/electron/elect56.htm (4783 words)

	NCJA - Teletypewriter (TTY) or Telecommunications Device for the Deaf (TDD) Operations
		Teletypewriters were used by the military initially and by Western Union.
		Teletypewriters were developed when technology units were converted through the addition of an "acoustic coupler" invented by Robert Weitbrecht.
		These conditions affect all age groups from newly born to teenagers, adults and the elderly.
	www.jus.state.nc.us /NCJA/teletype.htm (1087 words)

	FM 24-19 Chptr 1 Radio And RadioTeletypewriter Sets
		When teletypewriter is not transmitting, the auxiliary REC-SEND switch, the MD-522 (*)/GRC SEND-REC switch, and the remote control REC-SEND switch must be set to REC to prevent transmitter from being continuously keyed.
		With the AUTO MARK HOLD switch in the ON position, the teletypewriter will not open during the period of no signals or when signals are too weak for interchangeability.
		Basic operation of the radio teletypewriter set is the same as for the Radio Teletypewriter Set AN/GRC-142.
	www.globalsecurity.org /military/library/policy/army/fm/24-19/Ch1.htm (7355 words)

	Teletypewriter Equipment & Supplies - Find Teletypewriter Equipment & Supplies Suppliers, Teletypewriter Equipment & ...
		Power Sourcing is your best source for finding teletypewriter equipment & supplies suppliers.
		Use our expansive directory to source suppliers of teletypewriter equipment & supplies and to source other products and services from thousands of suppliers, manufacturers, and distributors.
		These are just a few of our teletypewriter equipment & supplies suppliers.
	www.powersourcing.com /se/teletypewriterequipmentsupplies.htm (217 words)

	Issue Date Org
		There are four types of teletypewriter circuits utilized in the transmission of hydrologic observations and in the dissemination of forecasts and warnings.
		The RAWARC teletypewriter network will be used for dissemination of bulletins, forecasts and statements as well as collection of rainfall and river observations.
		Maintenance of a standard format in preparing hydrologic teletypewriter messages, to the extent possible, will assist in ready recognition and understanding of the data or forecast and expedite its handling.
	www.nws.noaa.gov /wsom/manual/archives/NE116817.HTML (2214 words)

	teletypewriter - OneLook Dictionary Search
		teletypewriter : Encarta® World English Dictionary, North American Edition [home, info]
		teletypewriter : Columbia Encyclopedia, Six Edition [home, info]
		Words similar to teletypewriter: teleprinter, telex, teletype machine, telex machine, more...
	www.onelook.com /cgi-bin/cgiwrap/bware/dofind.cgi?word=teletypewriter (166 words)

	Secret War 1 Vocabulary Practice (Site not responding. Last check: 2007-10-08)
		______________________ A teletypewriter functions in this way: An (**) types a message; the message travels to another teletypewriter; a receiver reads the message (a person who uses a teletypewriter**, a TTY, or any machine).
		______________________ A teletypewriter, a telegraph, and a radio are each examples of a (****) because each can communicate information (something that carries and communicates information).
		______________________ The International Teletypewriter (****) consists of combinations of holes (◊) and spaces (♦) that represent letters and words.
	www.rit.edu /~japnce/payne/computers/vocab/secretwar1V.html (947 words)

	[No title]
		A A\n\o\ PColossus still had a teletypewriter connected, A\n\o\ Pon top the usual roll of low-grade A\n\o\ Pwar time yellow turned grey paper A\n\o\ Pa dozen feet or so hanging in back.
		A PThe teletypewriter ribbon had long dried out, Phence the last few lines on the yellow roll paper were completely unreadable.
		PA minute later Pthe teletypewriter went AThe teletypewriter went silent.
	www.wps.com /www.wps.com/products/Story-Teller/technical/colossus.txt (421 words)

	Pamphlet 88 Automatic Equipment Technician
		Orientation to Automatic Teletypewriter Equipment Repair Techniques and processes-- (1) Observe and apply shop practices to include proper use, maintenance, care and storage of required tools.
		Install Teletypewriter Equipment Using Required Tools and Equipment-- Install teletypewriter sets, teletypewriter reperforator, distributor-transmitter set, low-level signaling devices, and other equipment in permanent facilities, semi-permanent, mobile van, or stationary shelter using proper tools and equipment, following prescribed specifications, safety practices, and interconnecting components.
		Performance Preventative Maintenance on Teletypewriter Equipment-- Perform preventive maintenance on electrical, mechanical, and test equipment to include fungi-proofing or waterproofing and dust control using proper tools conforming to safety practices and following prescribed procedures.
	www.angelfire.com /nc/larrycreel/pam088.html (356 words)

	Telstra - Disability Services - TTY Payphones
		Telstra's Teletypewriter (TTY) Payphones enable people who are deaf or have a communication impairment to stay in touch when out and about.
		Over 230 Telstra Payphones have now been modified to include a teletypewriter facility.
		Telstra continues to work with organisations representing deaf, hearing and speech impaired people to identify appropriate new locations for TTY payphones, and review existing locations to ensure that the placement of these payphones meet the requirements of the local community.
	www.telstra.com.au /disability/ttypayphones (216 words)

	Sec. 4252. Definitions (Site not responding. Last check: 2007-10-08)
		REPEAL This subchapter, relating to the tax on communications was repealed by Pub.
		89-44 substituted definition of ''teletypewriter exchange service'' for definition of ''telegraph service''.
		85-859 substituted provisions defining ''teletypewriter exchange service'' for provisions which defined ''leased wire, teletypewriter or talking circuit special service''.
	www.washingtonwatchdog.org /documents/usc/ttl26/subttlD/ch33/subchB/sec4252.html (449 words)

	Teletypewriter training program now available
		The Minister for Communications, Information Technology and the Arts, Senator Richard Alston, today announced the addition of a comprehensive teletypewriter (TTY) training program as part of the National Relay Service (NRS).
		The NRS is provided as a community service for people who are deaf, or who have a hearing, speech or communication impairment, allowing them to access telephone services comparable to those of other Australians.
		Up to $275,000 in additional funding will be provided to ACE to run the program, which will include the appointment of a full time TTY training coordinator.
	www.dcita.gov.au /Article/0,,0_4-2_4008-4_103849,00.html (241 words)

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