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Topic: Single Channel Simulcast

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	Single Channel Simulcast - Wikipedia, the free encyclopedia
		Single Channel Simulcast one calls the simultaneous transmission of a similar amplitude-modulated and one after that digitally radio Mondiale - procedures of transferred signal in the same (SingleChannel Simulcast - SCS) or a neighbouring channel (MultiChannel Simulcast - MCS).
		For this the DRM signal the carrier is modulated in the procedure of the quadrature modulation and modulated on this signal then the similar signal, whereby depending upon for the order of standing range conventional amplitude modulation or To compatible single-sideband modulation can be used.
		The Simulcast procedure has the advantage in relation to the pure DRM procedures that also from old To receivers will receive the signal can.
	en.wikipedia.org /wiki/Single_Channel_Simulcast (203 words)

	Fast Guide to DTV - a Whatis.com definition - see also: DTV Guide
		The LFE channel is one tenth of the bandwidth of the other channels and is sometimes erroneously called the subwoofer channel.
		Simulcast is the simultaneous transmission of the same television program in both an analog and a digital version using two different channels or frequencies.
		Simulcast is also used for the transmission of simultaneous television and Internet services, the transmission of analog and digital radio broadcasts, and the transmission of television programs in different screen formats such as the traditional format and the wide screen format.
	whatis.techtarget.com /definition/0,,sid9_gci339456,00.html (5296 words)

	[No title] (Site not responding. Last check: 2007-09-08)
		If a mobile station accessed the first access channel during the time interval corresponding to the first time offset, then a first power control bit having a first position within the power control information packet is mapped to the first access channel and the first time offset.
		If a mobile station failed to access the first access channel during the time interval corresponding to the first time offset, then the first power control bit having the first position within the power control information packet is mapped to the first access channel and a second time offset associated with the first access channel.
		Likewise, the channel estimation preamble 1513 is shown to be equal in duration to one PICCH mini-slot 1505.
	www.wipo.int /cgi-pct/guest/getbykey5?KEY=00/21213.000413&ELEMENT_SET=DECL (12467 words)

	ipedia.com: BBC Article (Site not responding. Last check: 2007-09-08)
		In March 2003 the BBC announced that from the end of May 2003 (subsequently deferred to July 14) it intended to transmit all eight of its domestic television channels (including the 15 regional variations of BBC ONE) unencrypted from the Astra 2D satellite.
		The channel was due to launch on 20 April, 1964, but was put off the air by a massive power failure that affected much of London, caused by a fire at Battersea Power Station.
		In December of 1967 it became the first regular television channel in Europe to broadcast in colour, using the German PAL system that is still in use today although being gradually superseded by digital systems.
	www.ipedia.com /bbc.html (4566 words)

	SIMULCAST CONCEPT
		The location of the simulcast controller (computer) and other equipment (including the voters) that makes simulcast possible is called the “prime site” and may, or may not, be located at one of the remote site locations.
		Simulcast has a limited number of sites it can handle (limiting the amount of signal delivered to the coverage area- with larger areas getting less signal for a given number of sites).
		Simulcast requires a transmitter at every site for each frequency whether or not that site is required for a particular call (increases the system cost), and requires exclusive frequency usage in a very large area (limiting the ability to reuse frequencies- an FCC issue).
	www.northwestradio.com /interceptnw/101.htm (4132 words)

	Telsat® Communications Ltd Satellite TV (TVRO) LNB/LNBF Web Page
		Several things affect the number of channels including the number of broadcast frequencies (transponders) licensed by each provider, the number of channels packed into each transponder frequency, the number and power of the satellites in place at each location, whether or not they broadcast in high definition, and other factors.
		The number of channels which can be compressed onto each transponder depends on a lot of things such as desired image quality, degree of allowable visible artifacts, frame rate of the source material, amount of movement in the source material, and the amount of error correction overhead.
		Channel Master and perhaps other companies sell a MultiSwitch which takes both coaxial outputs from a dual output dish and allows up to four decoders to be connected to it.
	www.telsat.com /usdbs.htm (5419 words)

	[No title]
		In particular, we believe that the Commission's current channel election and replication requirements and deadlines may be imposing substantial burdens on broadcasters without sufficient countervailing public benefits, and may in fact be contributing to difficulties faced by a substantial number of stations in meeting their DTV construction deadlines.
		These replication protection and channel election deadlines may be earlier than but will in no event be later than the latest of either the end of 2006 or the date by which 85% of the television households in a licensee's market are capable of receiving the signals of digital broadcast stations.
		Although some stations received transition channels out of the core, and a few have both their NTSC and DTV channels outside the core, we believe that there will be sufficient spectrum so that at the end of the transition all DTV stations will be operating on core channels.
	www.fcc.gov /Bureaus/Mass_Media/Orders/2001/fcc01330.txt (17398 words)

	[No title]
		We invite comment on whether we should require that broadcasters also change their channels at the end of the transition period, so that the spectrum that will ultimately be recovered can be aggregated into contiguous blocks, thereby increasing its potential value for new, as yet undefined, uses.
		We ask whether we should impose a modified simulcast requirement, under which an ATV licensee would be required to simulcast the programming presented on the NTSC channel (with the exception of commercials and promotions) on a program service of the ATV channel.
		The Commission previously decided that ATV would be introduced by assigning existing broadcasters a temporary channel on which to operate an ATV station during a transition period and that the spectrum needed for the transition would be obtained from the spectrum currently allocated to broadcasting.
	www.fcc.gov /Bureaus/Mass_Media/Notices/1995/fcc95315.txt (11657 words)

	Trunking the EDACS way
		The control channel acts as a conduit for the commands and requests being sent back and forth between the units in the field and the processor controlling system operations.
		The repeating working channel assignment for that group will be received and will route the radio to the same channel as the other members of its group.
		The channel assignment can be maintained as long as users in the group continue to use the channel before the pre-programmed delay period expires.
	mrtmag.com /mag/radio_trunking_edacs_2 (1615 words)

	Digital Wireless Corporation (Site not responding. Last check: 2007-09-08)
		DV/IP can be installed as a one channel non-trunked "conventional" digital repeater, supporting a modest number of units, and expanded to multi-channel trunked and multi-site system.
		Single channel systems can be seamlessly linked with multi-channel systems.
		And because DV/IP can carry multiple voice and data "channels" on one RF carrier, a "single channel system" can effectively become a multiple channel trunked system.
	www.digitalwireless.com /overview/overview.html (205 words)

	NJN - New Jersey Public Television and Radio
		The back channel can be used to provide feedback from the viewer.
		Channel: As in television channel; the television broadcast frequency.
		The over-the-air television channel assignments are set by the FCC (VHF or UHF) However, NJN also transmits its broadcast signal to cable which is assigned a tune-in number on your TV.
	www.njn.net /digital/glossary.html (626 words)

	[No title]
		Simulcast (analogue and digital share a single channel) b.
		Single frequency from geographically separated or co-sited transmitters.BThe ability to support this function depends on the geographic separation of the transmittersb.
		At the loss of the main channel digital signal, the system blends to either the backup digital or the analog signal to ensure there is not an abrupt loss of signal.
	www.ibiquity.com /about/pdf/209e_ww9.doc (1236 words)

	WHYY: Digital TV Glossary
		The back channel can be used to provide feedback, purchase goods and services, request more information, and so on.
		The over-the-air television channel assignments are set by the FCC and are currently found in the VHF or UHF band.
		During the transition period each television broadcast station is being permitted to operate a 2nd channel for DTV.
	www.whyy.org /tv12/dtv/glossary.htm (1901 words)

	What is Trunking?
		The principles of Simulcast and stand-alone Receiver Voting are used in the same manner as in conventional radio.
		If one site has five channels, and is currently busy, yet another site has ten channels, and a subscriber wishes to talk on a group not currently in progress, you must choose how this is handled.
		Simulcast networks work the same yet EDACS networks, which are similar to AMSS networks, are all independent of each other but still interconnected.
	www.thebriarpatch.org /trunking/what_is_trunking.html (4439 words)

	Satellite radio
		This allows the listener to follow a single channel no matter where they are because the signal's reach is not limited by station power and curvature of the Earth.
		A monthly fee is charged for both services (As of 2004 Sirius also offers a one time fee of nearly $500 valid for the lifetime of the equipment).
		Originally some XM music channels had commercials, while Sirius was commercial-free.
	www.brainyencyclopedia.com /encyclopedia/s/sa/satellite_radio.html (375 words)

	Digital Television: The Site - What is Digital Television (DTV)? / Consumer Information Page (Site not responding. Last check: 2007-09-08)
		To find out which digital television channels you can receive now, when other channels are scheduled to go on-air, what content they are airing as well as what antenna you will need, go to the TitanTV.com website run by the Decisionmark corporation.
		The law requires that at least one channel must be free and the same quality as the analog channel-but not the same program.
		Incredibly, it is in the specification that a single channel of digital television can have as many as 1,024 different programs, but they don't all have to be TV.
	www.digitaltelevision.com /consumer/what.shtml (1119 words)

	PACMERS \| Pacific Mobile Emergency Radio System (Site not responding. Last check: 2007-09-08)
		MUX is the combining of the signals of several devices or users for transmission over a single telecommunications path or channel.
		The Central Controller generates the OSW and sends it over the control channel to all mobiles, portables, and base stations/repeaters.
		The TIB monitors the forward and reflected status signal from the channels and passes control signals to the channels.
	www.pacmers.com /glossarylt.html (803 words)

	[No title]
		Due to the linearity and bandpass capability of the Diacrode, advanced tetrode and associated cavities, the new Acrodyne transmitter is able to pass two adjacent channel signals that are then combined and fed into the final amplifier.
		The single transmitter feeds a single transmission line and dual channel antenna.
		That may be of particular interest to adjacent channel broadcasters facing zoning and signal interference issues because ACT users will not have to install an additional antenna for DTV during the simulcast period.
	fedele.com /website/tvt/tv100997.txt (713 words)

	Radio to the rescue for Gulf Coast updates - Boston.com (Site not responding. Last check: 2007-09-08)
		Clear Channel simulcast a signal from local TV until reinforcements arrived a few days after Katrina struck, said emergency response news director Pam Rahal, who flew in from Atlanta.
		Forced to evacuate its 40 news staffers because of the rising water, WWL struck up an unusual deal with rival Clear Channel to pool their resources and beam a broadcast.
		It was simulcast on some of Clear Channel's seven New Orleans' stations as well as WWL and two other Entercom stations in the city.
	www.boston.com /news/nation/articles/2005/09/19/radio_to_the_rescue_for_gulf_coast_updates?mode=PF (827 words)

	[No title] (Site not responding. Last check: 2007-09-08)
		Critics of must carry requirements state that the primary beneficiaries include marginal television broadcasters, such as home shopping channels, while cable operators incur an unnecessary handicap in having to abandon carriage of additional video content due to the compulsory carriage of signals few viewers would care to watch.
		The Order states that mandatory dual carriage was not necessary either to advance the governmental interests as identified by Congress and the Supreme Court, or to facilitate the transition from analog to digital television: We therefore affirm our earlier conclusion that the Act is ambiguous on the issue of dual carriage.
		With two channels broadcasters can simulcast an analog and digital signal thereby offering consumers the chance to extend the useable life of their existing television sets, but as well the opportunity to use digital television sets to receive enhanced and high definition television broadcasts.
	www.personal.psu.edu /users/r/m/rmf5/MustCarrySummary.doc (4711 words)

	Antenna Hungária Rt. (Site not responding. Last check: 2007-09-08)
		With safety in mind, the overhead system is mounted on the roofliner in the ear of the car and out of sight of the driver, while the TV itself is operated via a remote control built into infrared headphones.
		Traditional electronics retailers are where the majority of CE and DTV sales are made, but new channels including club stores, online/direct sellers, and discount retailers are playing an increasing role, driving down average prices and squeezing gross margins.
		The medium-wave transmitter, made by DRM member TELEFUNKEN, has been modified to operate in Single Channel Simulcast Mode, which means that Voice of Russia's broadcasts can be sent in both analog and DRM formats.
	www.ahrt.hu /en/services/newsletter_AC0DDF3642B646578F38F95180A6584C.php (1314 words)

	BigBand Networks - Products
		The BigBand BRE™ (Broadband Real-Time Encoder) is a robust encoder that enables a service provider to benefit from digital transport and processing by converting incoming analog feeds at a headend to digital streams.
		Two channels of video and audio are encoded in a one RU chassis.
		Full interoperability with the BMR platform ensures that a service provider deploying the BRE has the most effective platform for supporting digital simulcast, deep digital transport and other advanced broadcast applications.
	www.bigbandnet.com /products/bre20.php (328 words)

	[No title]
		The medium-wave transmitter, made by DRM member Telefunken, has been modified to operate in single-channel simulcast mode, which means that the Voice of Russia's broadcasts can be sent in analog and DRM formats.
		I was absolutely appalled to find that, on one channel after another, furious tirades against gay rights, gay marriage, abortion, sex education and "youthful promiscuity" were being blasted into the airwaves, especially from the southern stations.
		But when the FM band opens up, and you suddenly hear DOZENS of these stations blasting the very same mean-spirited and hateful rhetoric into the ether, on channel after channel, you soon begin to understand the means through which the extreme-right-wing is managing to hijack the politics of the United States.
	www.worldofradio.com /dxld4102.txt (12051 words)

	Television Program Preferences in Cable Households (Site not responding. Last check: 2007-09-08)
		These channels are immensely popular with children, since the broadcast channels program for them only a small number of hours per day.
		There are not enough awards to go around for a specialty channel, so this refers to special events that may appear on broadcast and/or cable channels.
		There is some coverage by the international news channels, but there is good coverage from the Buenos Aires news channels Crónica TV, CVN, Red de Noticias, TN (Todo Noticias) and 26 TV.
	www.zonalatina.com /Zldata103.htm (1667 words)

	Tusa Consulting Services (Site not responding. Last check: 2007-09-08)
		A second two-site, ten-channel simulcast system was designed for the eastern portion of the County.
		This work included the optimization of coverage from existing simulcast sites, the addition of two new simulcast tx/rx sites and the development of a conventional radio system infrastructure.
		Tusa Consulting, in conjunction with Moses Engineers, Inc., is continuing the design and development of an 8-channel simulcast trunked radio system to serve County and municipal public safety agencies.
	www.tusaconsulting.com /services.htm (2580 words)

	Acrodyne Introduces Single AMP Solution to Dual adjacent Channel Broadcasters (Site not responding. Last check: 2007-09-08)
		ACT is especially good news for adjacent channel broadcasters facing zoning and signal interference issues, not to mention the additional capital expenditure associated with buying a second transmitter and placing an additional antenna for DTV during the simulcast period.
		Poised to benefit from ACT are approximately 320 broadcasters assigned DTV channels and are adjacent (e.g., channel 40 and 41, or 17 and 18) to their current analog channels.
		ACT also offers a solution to broadcasters discussing possible modifications of channel allocations and potential co- location of digital and analog transmission facilities.
	www.broadcast.net /~sbe16/wg/1997/acro997.htm (326 words)

	Articles - Digital Radio Mondiale (Site not responding. Last check: 2007-09-08)
		Unlike most other DAB systems, DRM uses IBOC technology and can operate in a hybrid mode called Single Channel Simulcast, simulcasting both analog signal and digital signal.
		It can run in simulcast mode by switching between DRM and AM, and it is also prepared for linking to other alternatives (e.g.
		DRM has been tested successfully on shortwave, mediumwave (with 9 as well as 10 kHz channel spacing) and longwave.
	www.zgrey.com /articles/Digital_Radio_Mondiale (394 words)

	[No title]
		A report by the legendary Arthur Cushen in New Zealand, just six months after their declaration of independence, states that a radio station is on the air in the capital city, Pyongyang.
		This SCS process (SCS, Single Channel Simulcast) was developed by Sony and transmits all signals in one channel (9 kHz or 10 kHz).
		It also includes Single Channel Simulcast test transmissions on long-wave from the T-Systems site in Zehlendorf, Germany on 177kHz with a TRAM line transmitter TRAM/P500 L and Modulator DRM DMOD 2.
	www.worldofradio.com /dxld3163.txt (11914 words)

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