SCR-536

SCR-536

The SCR-536 was a hand-held radio transceiver used by US Signal Corps in World War II. It is popularly referred to as a walkie talkie although it was originally designated a "handie talkie".cite web |url=http://www2.arrl.org/qst/2005/01/0501047.pdf |title=A Short History of the Handheld Transceiver |accessdate=2008-04-01 |format=pdf]

History

The SCR-536 is often considered the first of modern hand held, self-contained, "handie talkie" two-way radios. It was developed in 1940 by a team led by Don Mitchell, chief engineer for Galvin Manufacturing (now Motorola) and was the first true hand-held unit to see widespread use. By July 1941, it was in mass production, and at war’s end, 130,000 of them had been manufactured. It was the smallest of all the two-way radio equipment used by the Signal Corps at the time.

In November 1942, the SCR-536 received coverage in the amateur radio magazine QST. It appeared on the cover as well as in Signal Corps advertising, and was featured as part of an article on the Signal Corps. “Smallest field unit of the Signal Corps,” a photo caption read, “it is not much larger or heavier than a conventional handset.”

Today the SCR-536 is often restored and operated by vintage amateur radio enthusiasts and military radio collectors.

Specifications

The SCR-536 incorporated five vacuum tubes in a waterproof case. There was no power switch on the SCR-536. The operator pulled out or pushed in the antenna on the top to turn the radio on or off. The power was supplied by a BA-37 1.5 volt dry battery for the filament supply and a 103.5 V BA-38 battery for plate supply. Battery life was about one day of normal use. The SCR-536 weighed 5 pounds with batteries and 3.85 lb without batteries (2.3 and 1.75 kg). The unit operated in AM voice mode between 3.5 and 6.0 MHz frequency range on any one of 50 channels. Plug in crystals and coils were used to control the frequency of the receiver and transmitter. The antenna was a 40 inch telescoping rod that slid into the case. The SCR-536 had an RF output power of 360 milliwatts. The range of the unit varied with terrain; from a few hundred feet, to approximately one mile over land, and 3 miles over water.

Under the Army Nomenclature System, the BC-611 transceiver was the core component of the SCR-536 Signal Corps Radio set. The Signal Corps technical manual number was TM 11-235. [cite web |url=http://www.olive-drab.com/od_electronics_scr536.php |title=SCR-536 Walkie Talkie |accessdate=2008-04-01]

See also

*ARC-5
*BC-348
*BC-654
*Collins Radio
*R-390A
*SCR-299
*Signal Corps Radio
*Wireless Set No. 19
*Vintage amateur radio

References


Wikimedia Foundation. 2010.

Игры ⚽ Нужен реферат?

Look at other dictionaries:

  • SCR-536 — Das Handsprechfunkgerät SCR 536 (SCR = Signal Corps Radio) wurde im Zweiten Weltkrieg von den US amerikanischen Streitkräften eingesetzt. Aufgrund seiner kleinen Bauform mit nur 2,5 kg Gewicht wurde das Gerät Handie Talkie genannt. Das SCR… …   Deutsch Wikipedia

  • Walkie-talkie — A walkie talkie (more formally known as a handheld transceiver) is a hand held, portable, two way radio transceiver. Originally developed for the Canadian government during the Second World War by Canadian Donald L. Hings, similar designs were… …   Wikipedia

  • Signal Corps Radio — Signal Corps Radios were U.S. Army military communications components that comprised sets . Under the Army Nomenclature System, SCR initially designated Set, Complete Radio, and later Signal Corps Radio, though interpretations have varied over… …   Wikipedia

  • Signal Corps Radio — Les Signal Corps Radios étaient des composantes de l Armée de terre des États Unis formées elles mêmes d unités. Dans la nomenclature militaire le sigle SCR, à l origine, voulait dire « Set, Complete, Radio » (ensemble radio complet),… …   Wikipédia en Français

  • Рация — Рация  переносное приемопередающее устройство (радиостанция). В 1930 е и 1940 е годы рацией нередко называли любую приемопередающую радиостанцию, в том числе и стационарную; слово употреблялось и в технической литературе, и в официальных… …   Википедия

  • List of World War II topics (S) — # S 1 Uranium Committee # S 50 # S mine # S Phone # S. A. Ayer # S. J. Warmington # S.L.A. Marshall # S.S. Doomtrooper # S.S. Pink Star # S?awomir Maciej Bittner # S?kichi Takagi # S?saku Suzuki # Søren Kam # Søren Petersen # S1 Scout Car # SA… …   Wikipedia

  • Batterieröhre — Eine Batterieröhre ist eine Elektronenröhre, die speziell für tragbare Geräte wie batteriebetriebene Röhrenempfänger, Sprechfunkgeräte wie das Handie Talkie SCR 536 oder Hörgeräte entwickelt wurde. Batterieröhren besitzen im Allgemeinen eine… …   Deutsch Wikipedia

  • Vintage amateur radio — is a subset of the amateur radio hobby, considered a form of nostalgia much like antique car collecting, where enthusiasts collect, restore, preserve, build, and operate amateur radio equipment from bygone years, most notably those using vacuum… …   Wikipedia

  • Vietnamese National Army — (VNA) Quân đội Quốc gia Việt Nam Flag of the Vietnamese National Army Active 1949–1955 …   Wikipedia

  • Candybar — Smartphone aus dem Jahr 2004: das Siemens SX1 mit integriertem Radio und MP3 Player Ein Mobiltelefon (auch Handy, Funktelefon, GSM Telefon, Funker, in der Schweiz auch Natel) ist ein tragbares Telefon, das über Funk mit dem Telefonnetz… …   Deutsch Wikipedia

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”