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Topic: Telegraph key

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	Telegraph key - Wikipedia, the free encyclopedia
		Telegraph key (also known as the Morse key) is a generic term for any switching device used primarily to send Morse code.
		Telegraph keys were once used in the study of operant conditioning with pigeons.
		Skinner at Harvard University, the keys were mounted vertically behind a small circular hole about the height of a pigeon's beak in the front wall of an operant conditioning chamber.
	en.wikipedia.org /wiki/Telegraph_key (757 words)

	telegraph (Site not responding. Last check: 2007-10-12)
		This key was also used by the South African military It went with a specific radio set.
		This key was used by telegraph test technicians.
		The key itself was strapped to the operator's leg.
	www.geocities.com /haroldrkramer/telegraph.html (272 words)

	OTB - Key and Telegraph
		It that will also focus on a very remarkable telegraphic event in which Martin participated as a young man. Some of you may have heard, or suspected, that Martin was a telegrapher befor he invented his famous Vibroplex.
		Telegraphers with the ability to move high volumes of copy in the least amount of time received the best pay, and Martin jumped around from city to city seeking such positions.
		He was now a 16-year veteran telegrapher who had not yet reached his 25th birthday, but the "paralysis" threatened his ability to support his growing family at the pay level of a star telegrapher.
	www.antiquewireless.org /otb/kt1102.htm (2112 words)

	Sparks Telegraph Key Review
		This basic key was made by Bunnell as part of Set 2-66 well after World War 2-- set 2-66 was a landline set used on simplex circuits and consisted of 2 galvanometers, a pen register, and this key on a beautiful 2-drawer wooden cabinet.
		This key was used on the E-3 transmitter of 1917 and on the third version of the PP4 (PP4 ter), a straight gap transmitter.
		The diaphragm on the Simon key is nonconducting.
	www.zianet.com /sparks/sparkmakers2.html (12000 words)

	Telegraph
		Named for their characteristic "hump", camelback keys were among the first telegraph keys placed into commercial use.
		In the early days of the telegraph there were many other attempts to develop methods of communication by wire, and one of these, the Hughes Telegraph, was especially unusual.
		The telegraph is an early example of the Wheatstone apparatus and is made from silver, brass, mahogany and iron.
	www.sparkmuseum.com /TELEGRAPH.HTM (1153 words)

	The Electromagnetic Telegraph
		Telegraphs made with one would work in a room, but would fail completely to work over only a short line, as many telegraph enthusiasts found to their disappointment.
		Telegraph trials were also made on the Saxon State Railways between Leipzig and Dresden by Weber of Göttingen and Steinheil in 1838, applying the telegraph to train operation, says M. von Weber in 1867, who also claims (probably erroneously) that the earth return was discovered there.
		Cooke and Wheatstone both worked on electrically-released dial telegraphs on which a hand would point to the desired message or character, so that skilled operators (and their wages) would not be required, or that the telegraph could be operated by the general public.
	www.du.edu /~jcalvert/tel/morse/morse.htm (23003 words)

	J-37 Telegraph Key (Site not responding. Last check: 2007-10-12)
		Key mounted on a metal "U" shaped bracket (to fit leg) KY-116/U. Bracket hindged to allow intermittent operation on flat surface.
		It has served well, and aside from the discomfort of the leg clamp, it is a key that can last a lifetime.
		The only difference is the change to a PL-68 plug that keys the PTT relay during CW operation.
	members.aol.com /tcsopr/j37key.htm (187 words)

	J-45 Telegraph Key (Site not responding. Last check: 2007-10-12)
		The J-45 is designed for mobile use, clamped to the user's thigh, but the key mounting is easily reversed for use on a table as well.
		The Federal Stock Number is for a "Key,Telegraph" and one of the Associated Part Numbers is J-45, so I guess this key probably belongs with this box, and that it is not of WWII vintage.
		The J-45FR was apparently made either by, or for, use by the French military.
	k6ix.net /J-37/J45.html (166 words)

	The Telegraph Office -- for Telegraph Key Collectors and Historians (Site not responding. Last check: 2007-10-12)
		Phelps: Besides making beautiful keys, Phelps was a developer of printing telegraphs and technical director of Western Union in the mid 19th century.
		A Key like used on the Titanic: A reproduction of the Marconi key made from photos and measurements of the key from the Titanic's sister ship Olympic.
		Three Telegraphic Poems of the 19th century: Besides being a great electro-physicist, James C. Maxwell was quite a poet.
	www.telegraph-office.com /tel_off-page.html (2958 words)

	Telegraph Key
		He gave a public demonstration in 1838, but it was not until five years later that Congress (reflecting public apathy) funded $30,000 to construct an experimental telegraph line from Washington to Baltimore, a distance of 40 miles.
		This was the first news dispatched by electric telegraph.
		The key is made by screwing one of the strips of metal to one of the pieces of wood so that pushing down on the strip brings the strip into electrical contact with the screw that is mounted under it.
	www.sciencerangers.com /morsecode.htm (478 words)

	Radiold's Antique Telegraph Items
		This is a flameproof (SC8975A) key that has leg straps for mobile operation.
		The key is marked on top with the words "KEY FOR NO. 48 SET".
		This key dates from WWII and is rather rare.
	www.radiold.com /telegraph/telegraph.htm (130 words)

	Paul's LM Ericsson Telegraph Key
		The Swedish type key as we know it was designed by Anton Henric Öller in 1857 being issued Swedish patent No. 54 for his design..
		Öller was the Telegraph Director of Stockholm having built the first telegraph line in Sweden using equipment from France and Germany.
		The dimensions and design of Ericsson keys, Öller keys, and Lindhölm and Wikström keys are nearly identical.
	www.angus1.com /ericsson/tgraph/key.htm (328 words)

	Artifax telegraph, key, radio and technical books
		Telegraph, key, antique radio and related books, signs, parts and more.
		David Homer Bates was Lincoln's telegraph operator during the Civil War and one of three expert Union code breakers who kept the Union strategically ahead of the Confederacy throughout the war.
		Following Markle's brief history of the development of the telegraph for the military, including the fundamentals of the codes used by both the Union and the Confederacy, Bates's diary gives an intimate look at life in the telegraphic center of the world from 1863 through 1865.
	artifaxbooks.com /afxtech.htm (1450 words)

	telegraphkey (Site not responding. Last check: 2007-10-12)
		The board in the example telegraph key was 18 L x 7.5 W x 1.5 H inches.
		Cut the aluminum into the required pieces: 1x6 inch aluminum sheet bent to hold the bulb, 2 one inch squares of aluminum, and a 10 x1 inch sheet of aluminum.
		The wire from battery with ring tongue terminal is connected to one end of the key by a screw into the board.
	www.discoverymuseum.net /communications7/telegraph/telegraphkey2.htm (695 words)

	J-43 Telegraph Key (Site not responding. Last check: 2007-10-12)
		You can also see the words "GND." and "KEY" stamped in white near the binding posts on the frame.
		On the bottom of the frame you can see the filled grooves that connect the toggle switch to the RELAY binding post and the anvil of the key.
		The toggle switch has no effect on the normal operation of the key, but when the switch is set to CLOSED there is continuity between the "GND." (left) binding post on the frame and the "RELAY" binding post on the right rear of the base.
	k6ix.net /J-37/J43.html (144 words)

	Telegraph-History
		Telegraph instrument maker and inventor for The American Telegraph Co. and Western Union.
		Telegrapher, inventor, and manufacturer best known for his invention of the Vibroplex Bug.
		Engineer, inventor, telegrapher, explorer, writer, and an early partner with Thomas Edison.
	www.telegraph-history.org (150 words)

	GHD Morse Paddles and Bugs
		The GHD keys, made by Toshihiko Ujiie (JA7GHD) in Sendai City, are beautiful, practical, and innovative.
		In a twist on the usual situation, many of the fl-based keys are more expensive than the chrome version, which can be seen as a measure of the quality of the finish.
		You can even record message memories with a straight key, and all of the details of your "fist" are preserved for instant sending.
	www.mtech.whsites.net /ghd (2670 words)

	TELEGRAPH KEY COLLECTORS - TELEGRAPH & SCI INSTRUMENT MUSEUMS
		He edits the telegraph page of the Antique Wireless Association (AWA) bulletin and is an expert on early telegraph instruments.
		Bobbi has recently completed construction of several homemade keys including a straight key, a sideswiper,:(42KB) and a bug which will be used in upcoming contests.
		John Kakstys (W2FNT) and Tom Perera (W1TP) examine a key at a New Jersey hamfest:(23KB) John is to be found at almost every hamfest and always has a table that is stacked high with goodies.
	w1tp.com /mcol.htm (1126 words)

	Telegraph Key (Site not responding. Last check: 2007-10-12)
		The telegraph key Samuel Morse used on his first line in 1844 was very simple--a strip of spring steel that could be pressed against a metal contact.
		Alfred Vail, Morse's partner, designed this key, in which the gap was more easily adjustable because of changes in its spring tension.
		It was used on the expanding telegraph system, perhaps as early as the fall of 1844 and certainly by 1845.
	www.150.si.edu /150trav/remember/r818.htm (101 words)

	The Telegraph Office -- A Tribute to Morse Telegraphy and Resource for Wire and Wireless Telegraph Historians and ... (Site not responding. Last check: 2007-10-12)
		The Telegraph Office -- A Tribute to Morse Telegraphy and Resource for Wire and Wireless Telegraph Historians and Collectors
		Telegraph key, telegraph history, Vibroplex, Vibroplex bug, key, sounder, relay, morse code, morse registers, railroad telegraph, telegraph sounder, call box, leg key, legless key.
		Bug, semi-automatic key, Vibroplex, McElroy, Bunnell, Bunnell-Martin, Mecograph, Signal Electric, Melehan Valiant, Melehan.
	www.telegraph-office.com (108 words)

	Telegraph Key & Sounder (Site not responding. Last check: 2007-10-12)
		The telegraph was the only long distance instant communication device until radio and other means came along.
		Railroads were always the largest users of the telegraph and utilized them for more than a century.
		Telegraph Key and Sounder Plans Set - $12.00 Post Paid in the USA
	www.jerry-howell.com /Telegraph.html (209 words)

	Artifax links page
		A "bug" is a semi-automatic telegraph key; it can make several dots with one press of the lever (sideways) using a vibrating pendulum.
		A "straight key," also called a "hand key," is the ordinary, old-fashioned up-and-down lever key -- press the knob for each dot or dash.
		Finally, a "paddle" is a modern key, used with electronic keyers.
	www.artifaxbooks.com /afxlink.htm (414 words)

	Telegraph Keys Iambic Keyer Paddles Morse Code Keys
		Separate detachable cables are a major advantage that our Mini-Paddles and Mini Telegraph Keys offer compared to others on the market.
		The MK-11, MK-22, MK-32, MK-33, MK-44, MK-48, and MK-49 are plug and play ready, and are free of the awkwardness of fixed length cables permanently soldered and connected, as is the case with other key makers.
		This makes our keys more flexible and easier to store and transport.
	electronicsusa.com /mk.html (504 words)

	Telegraph Key 2
		Prewar German Signal Corps Telegraph Key - Model T1 The base is marked "Baumuster:T.1 - Anf.
		Z: Ln 26902" and has a maker's mark (see photos) Has rubber on the base, has the cord and plug.
		The cover is missing, otherwise in good condition.
	www.m43caps.com /telegraph_key_2_.htm (44 words)

	TELEGRAPH, SCIENTIFIC INSTRUMENT & RADIO MUSEUMS
		These online MUSEUMS are dedicated to the PRESERVATION of TELEGRAPH and SCIENTIFIC History, Lore, and Instrumentation: These are no-frills museums designed for rapid and easy searching and downloading to facilitate research by serious collectors and historians but accessible to anyone who is interested in telegraph and scientific instruments.
		As a telegraph operator and collector for over 50 years, I have assembled a collection of over 3000 telegraph and scientific instruments and photographs.
		Once again, I will be exhibiting hundreds of keys dating from before the Civil War to the present.
	www.chss.montclair.edu /~pererat/telegraph.html (1497 words)

	QRP J-38 Telegraph Key (Site not responding. Last check: 2007-10-12)
		The QRP J-38 traces its history to the vintage J-38 telegraph key of World War II fame.
		The QRP J-38 comes complete with an adjustable tension spring, key travel and bearing tension, a hand finished mahogany base (or optional fl bakelite style base) and non-slip feet.
		All our keys are guaranteed to function just like the full size J-38s.
	www.qrpj38.com (147 words)

	America on the Move \| Central Pacific Railroad telegraph key
		This Morse telegraph key was taken from the first Railroad Overland Telegraph Line, running between Sacramento, California and Promontory, Utah.
		The line was completed on May 10, 1869.
		The telegraph key was used by the Central Pacific Railroad.
	americanhistory.si.edu /onthemove/collection/object_170.html (82 words)

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