
	Where results make sense

Topic: Terrestrial Trunked Radio

Related Topics

Professional Mobile Radio

Time division multiple access

Radio

PABX

PSTN

ETSI

Russia

Economy of Russia

Centurion tank

Singapore Army

History of Uganda

African National Congress

Jerky Boys

In the News (Sat 5 Dec 09)

Northern Trust

Marvin Harrison

Peter Chernin

Gary Locke

Match Play

Penelope Cruz

Mickey Rourke

AR Rahman

Danny Boyle

Hugh Jackman

	What is TETRA? - a definition from Whatis.com - see also: Terrestrial Trunked Radio
		This infrastructure is targeted primarily at the mobile radio needs of public safety groups (such as police and fire departments), utility companies, and other enterprises that provide voice and data communications services.
		Based on digital, trunked radio technology, TETRA is believed to be the next-generation architecture and standard for current, analog PMR and PAMR markets.
		TETRA, which originally stood for Trans-European Trunked Radio, was renamed Terrestrial Trunked Radio after ETSI found widespread interest in the TETRA standards beyond Europe's geographic borders.
	searchmobilecomputing.techtarget.com /sDefinition/0,,sid40_gci214574,00.html (758 words)

	Radio
		A radio wave is created whenever a charged object accelerates with a frequency that lies in the radio frequency (RF) portion of the electromagnetic spectrum.
		Although the word 'radio' is used to describe this phenomenon, the transmissions which we know as television, radio, radar, and cell phone are all in the class of radio frequency emissions.
		Radio remote control: Use of radio waves to transmit control data to a remote object as in some early forms of guided missile, some early TV remotes and a range of model boats, cars and aeroplanes.
	www.starrepublic.org /encyclopedia/wikipedia/r/ra/radio.html (3044 words)

	Terrestrial Trunked Radio - Encyclopedia, History, Geography and Biography
		TErrestrial Trunked RAdio (TETRA) (changed from Trans European Trunked Radio) is a specialist Professional Mobile Radio and walkie talkie standard used by police, fire departments, ambulance and military.
		TETRA is endorsed by the European Radio Communications Committee (ERC).
		This enables users to have a one-to-one trunked 'radio' link between sets without the need for the direct involvement of a control room operator/dispatcher.
	www.arikah.com /encyclopedia/Terrestrial_Trunked_Radio (988 words)

	Croydon Tramlink - The Unofficial Site
		The radio system is vital to the effective running of the system and allows the Therapia Lane Control Room to communicate to a tram driver, to an operative on foot using a hand portable or to an operative driving one of the three road vehicles easily and clearly.
		Radios are in each tram cab and are grouped together for a call received from the controller, i.e.
		These can be made to all radios for announcements and if the controller requests each tram to acknowledge the announcement, then the amber button on the radio is pressed to confirm the message was received and understood.
	www.croydon-tramlink.co.uk /info/infra/radio.shtml (1555 words)

	BandRadio - Radio
		Radio waves are a form of electromagnetic radiation, created whenever a charged object (in normal radio transmission, an electron) accelerates with a frequency that lies in the radio frequency (RF) portion of the electromagnetic spectrum.
		Radio amateurs are able to use frequencies in a large number of narrow bands throughout the radio spectrum.
		Radio remote control use sof radio waves to transmit control data to a remote object as in some early forms of guided missile, some early TV remotes and a range of model boats, cars and aeroplanes.
	bandradio.com /radio (3898 words)

	Comtronics Wireless Communications - Two-Way Radio (Site not responding. Last check: )
		Radio paging, in existence since the 1950's, is one of the older forms of land-based mobile communications services.
		The data is transmitted by a lightweight monitor, via radio, to a sensitive receiving system with antennas generally installed in the ceilings of the hospital corridors.
		Radio frequency spectrum currently available to support these biomedical telemetry applications includes the 174-216 MHz band on an unprotected, non-licensed basis under FCC Part 15 Rules, and the 450-470 MHz band on a secondary basis, under FCC Part 90 Rules.
	www.radioshop.com /MobileRadioOverview.shtml (2107 words)

	What is Trunking?
		With trunked radio subscribers are unaware of what frequency they are on or their true activity on the system.
		An individual radio id is a lot like a computer network logon name except that each time a subscriber makes a call, or changes channels, its radio id is authenticated, and possibly logged.
		As the radio frequency spectrum became more crowded the FCC encouraged trunked system operators on the 800MHz band to switch to digital modulation as frequencies could be spaced closer together.
	www.thebriarpatch.org /trunking/what_is_trunking.html (4439 words)

	Wikipedia: Terrestrial Trunked Radio - Wikipedia, the free encyclopedia
		TErrestrial Trunked RAdio (TETRA) (changed from Trans European Trunked Radio) is a specialist Professional Mobile Radio and walkie talkie standard used by police, fire departments, ambulance and military.
		TETRA is endorsed by the European Radio Communications Committee (ERC).
		This enables users to have a one-to-one trunked 'radio' link between sets without the need for the direct involvement of a control room operator/dispatcher.
	en.pediax.org /Terrestrial_Trunked_Radio (931 words)

	TErrestrial Trunked RAdio
		Terrestrial Trunked Radio is an open digital Private Mobile Radio (PMR) and Public Access Mobile Radio (PAMR) standard defined by the European Telecommunications Standardization Institute (ETSI) to meet the needs of the most demanding professional mobile radio users.
		Trunking is a method of traffic channel organization where a traffic channel is allocated for each call transaction.
		TETRA trunking facility provides a pooling of all radio channels that are then allocated on demand to individual users, in both voice and data modes.
	nesl.ee.ucla.edu /courses/ee206a/2003s/submissions/hw2/JU-LAN_HSU (1061 words)

	Terrestial Trunked Radio, radio communication standards, tetra private digital mobile radio pmr
		tetra radio communications, professional mobile radio communications, open standard for digital radio communications, public safety radio, police fire and ambulance communications, terrestrial trunked radio, mobile and portable radios and terminals, private mobile radio, private access mobile radios
		Terrestrial Trunked Radio (TETRA) is an open digital trunked radio standard for users of professional mobile radio communications, typically the public safety agencies such police, fire and ambulance, and other industry sectors such utilities and transport.
		Terrestrial Trunked Radio (TETRA) is an open digital standard defined by the European Telecommunications Standard Institute (ETSI).
	www.tetra-association.com (554 words)

	Nokia - Nokia Telecommunications and Elektrobit Oy Develop New TETRA-Standard Hand-Held Radio - Press Releases - Press ...
		The radio complies with the TETRA (Terrestrial Trunked Radio) standard and the first radios will be delivered in October this year.
		In addition to the TETRA hand-held radio project, Elektrobit has made long-term investments in the Tetrasim radio channel simulator, which is used in the type testing of TETRA systems.
		Terrestrial Trunked Radio (TETRA) is a new open digital trunked radio standard defined by the European Telecommunications Standard Institute ETSI to meet the needs of the most demanding professional mobile radio users such as utility and oil companies, railways and authorities.
	press.nokia.com /PR/199708/778112_5.html (583 words)

	R&S BICK Information about Trunked Radio prof (Site not responding. Last check: )
		TETRA, the European standard for Trunked Radio Systems, is primarily intended for users in the public security sphere, transport, utilities and operators of public Trunked Radio networks.
		As fully digital radio system, TETRA is hallmarked by improved transmission quality and higher frequency economy.
		Thus the system platform is able to combine the two radio services, mobile data transmission and paging, which were up to now only offered by separate infrastructures.
	www.jobs.rohde-schwarz.com /www/dev_center.nsf/html/bick_tetrainfo_eprof (261 words)

	Motorola, Pentagon sign $15.8 million deal for police radio system in Baghdad
		When a user attempts to make a call with his radio, a trunked system searches for an available channel and assigns it to the call.
		Motorola manufactures a line of trunked radio systems that support the Tetra standard, which features built-in encryption and can scale up to support as many as 30,000 users.
		Tetra, short for terrestrial trunked radio, is the European Telecommunications Standardisation Institute's only open standard for digital two-way radio, according to Motorola.
	www.computerworld.com /printthis/2003/0,4814,81773,00.html (395 words)

	Terrestrial Trunked Radio
		TErrestrial Trunked RAdio (TETRA) is a specialist cell phone and walkie talkie standard used by police, ambulance and military.
		* handsets are more expensive (about 750 EUR in 2003), due to the reduced economies of scale compared to mass-market cellphones TETRA uses Time Division Multiple Access (TDMA) with four user channels on one radio carrier and 25 kHz spacing between carriers.
		Terrestrial Trunked Radio - TETRA: A Global Security Tool
	www.abacci.com /wikipedia/topic.aspx?cur_title=Terrestrial_Trunked_Radio (328 words)

	< HYT Digital System Solution >
		HYT iNetra Digital Trunked Solution provides the latest generation of digital trunked infrastructure with high availability and high reliability and it is quite suitable for trunked solutions in safety and security related markets.
		TETRA (TErrestrial Trunked RAdio) Digital Trunked Communication Standard is a kind of radio communication standard which adopts digital Time Division Multiple Access (TDMA) technology.
		This standard is a uniform and open digital trunked radio standard defined by the European Telecommunications Standardization Institute (ETSI).
	www.hyt.cn /02product/index02.asp (456 words)

	Airwave O2 Limited: The Network (Site not responding. Last check: )
		TErrestrial Trunked RAdio (TETRA) is the modern digital Private Mobile Radio (PMR) and Public Access Mobile Radio (PAMR) technology for the emergency services and other professional radio communication users.
		The TETRA trunking facility provides a pooling of all available radio channels, which are then allocated on demand to individual users, in both voice and data modes.
		TETRA differs from public mobile radio systems such as GSM primarily in terms of faster call set-up, group calls, prioritisation of calls, enhanced security features and the possibility of direct calls from mobile station to mobile station without a connection via a base station (direct mode operation).
	www.airwaveservice.co.uk /airwave15.asp (357 words)

	What is TETRA? - a definition from Whatis.com - see also: Terrestrial Trunked Radio
		- TETRA (Terrestrial Trunked Radio) is a set of standards developed by the European Telecommunications Standardisation Institute (ETSI) that describes a common mobile radio communications infrastructure throughout Europe.
		Based on digital, trunked radio technology, TETRA is believed to be the next-generation architecture and standard for current, analog PMR and PAMR markets.
		TETRA, which originally stood for Trans-European Trunked Radio, was renamed Terrestrial Trunked Radio after ETSI found widespread interest in the TETRA standards beyond Europe's geographic borders.
	searchnetworking.techtarget.com /sDefinition/0,,sid7_gci214574,00.html (670 words)

	On the ETSI's radar - What's cooking? - TETRA (Site not responding. Last check: )
		TErrestrial Trunked RAdio (TETRA) is the modern digital Private Mobile Radio (PMR) and Public Access Mobile Radio (PAMR) technology for police, ambulance and fire services, security services, utilities, military, public access, fleet management, transport services, closed user groups, factory site services, mining, etc.
		With support of the European Commission and the ETSI members, the TETRA standard has been developed over a number of years by the co-operation of manufacturers, users, operators and other experts, with emphasis on ensuring the standard will support the needs of emergency services throughout Europe and beyond.
		The standard builds upon the lessons and techniques of previous analogue Trunked radio systems and the successful development of GSM during the 1980s.
	www.etsi.org /etsi_radar/cooking/rub7/template.htm (778 words)

	EADS N.V. - EADS and Siemens submit tender for modern BOS digital radio system in Germany
		Terrestrial Trunked Radio, abbreviated to TETRA, is one of the most important modern digital radio standards and is in use throughout the world in the areas of public transport and safety and also has widespread industrial applications.
		It is a stable digital trunked radio network for closed user groups, enabling them to engage in mobile communication via reserved frequencies exclusively within their dedicated networks.
		The EADS Group therefore offers unrivalled competencies in fields such as analogue and digital radio technology and the smooth migration of these including the associated radio planning and control station technology, combined with knowledge of the security authorities' tactical mission requirements.
	www.eads.com /1024/en/pressdb/archiv/2005/2005/20051205_bosnet.html (624 words)

	TERRESTRIAL TRUNKED RADIO - GoGoSearch.com
		Of or pertaining to the earth; existing on the earth; earthly; as, terrestrial animals.
		TETRA (Terrestrial Trunked Radio) traffic was up 33% on 2006, with Monday June 4 seeing 15,483 calls, the highest daily total since it became operational in 2004.
		Also possible is for the terminal to act as a one to one walkie talkie but without the normal range limitation since the call still uses the network.
	www.gogosearch.com /wiki/Terrestrial_Trunked_Radio (819 words)

	Nokia THR880i TETRA Handportable Radio Now Shipping - Technology - RedOrbit
		Users can also use the radio's color browser to view digital content from their organization's database or from the web when such access is supported by the TETRA network infrastructure.
		Following the 380 MHz band, the 410 MHz variant Nokia THR880i radio is expected to start shipping in December, and the 800 MHz variant in the 1st quarter of 2005.
		TETRA (Terrestrial Trunked Radio) is the only open digital trunked radio standard defined by the European Telecommunications Standards Institute (ETSI) to meet the needs of the most demanding professional mobile radio users.
	www.redorbit.com /news/display?id=105131 (531 words)

	Trunking by TETRA
		The leading digital radio standard in Europe is named TETRA and is positioned to eventually replace the older, analog MPT-1327 systems.
		An extension of DMO allows a standard mobile radio to act as a repeater, passing transmissions from one radio to anther until reaching a radio tower.
		There is also a capability to authenticate radio users, making much more difficult for criminals and pranksters to transmit on public safety networks.
	www.signalharbor.com /ttt/01may/index.html (1548 words)

	EADS N.V. - EADS to build TETRA digital radio network for Stadtwerke München
		The new digital operations radio system, which is built to the European TETRA standard, meets the energy supplier's latest requirements for security, performance and commercial efficiency with regard to company-internal communication.
		EADS only recently received the contract to set up a digital radio service for German authorities and organizations with security tasks (BOS), under which EADS, as a prime contractor, is due to implement a nationwide TETRA digital radio network together with Siemens by 31 December 2010.
		Such radio solutions have already proved their worth with numerous companies, where the radio coverage has extended over both open sites and production halls, buildings and underground facilities.
	www.eads.net /web/printout/en/1024/content/400004/0/51/41304510.html/41282184_41282184/content/OF00000040950509/4/66/41480664.html (614 words)

	Terrestrial Trunked Radio Information and Facts
		TErrestrial Trunked RAdio (TETRA) (formerly known as Trans European Trunked RAdio) is a specialist Professional Mobile Radio and walkie talkie standard used by police departments, fire departments, ambulance services and the military.
		As well as allowing direct communications in situations where network coverage has been lost, Direct Mode or DMO also includes the possibility of using one (or a chain) of TETRA terminals as relays for a signal.
		Logic Trunked Radio: LTR Standard â¢ LTR Passport â¢ LTR Standard and Passport â¢ LTR MultiNet â¢ LTR-Net
	www.mbceo.com /arts/more_information.php?c=Terrestrial_Trunked_Radio (1054 words)

	t-systems.de: T-Systems to supply all FIFA World Cup stadiums with digital radio
		By means of the so-called direct mode, they stay connected to one another even when there is no radio contact with the base station.
		What is of particular importance in the stadium is that, thanks to good voice quality, radio communication is possible even when the noise level is high, and the connection is established in just less than half a second.
		One transmitter and around 2,500 meters of special cable ensure radio coverage of the entire stadium, the four multi-storey car parks, the esplanade and the exterior area.
	www.t-systems.com /en/Home/PressAnalysts/PressCenter/id=151618.html (515 words)

Try your search on: Qwika (all wikis)