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Topic: Simplex channel

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	NTIA TR-97-343, Appendix F
		Simplex channel 22A was used as the desired signal channel for testing the interoperability of a 12.5 kHz transmitter with the 25 kHz receivers.
		Channel 22A was also used to test the interoperability of a 25 kHz transmitter with a 12.5 kHz receiver on a simplex channel.
		Channel 85 was used to test the interoperability of a 25 kHz transmitter and 12.5 kHz receiver on a duplex channel.
	www.ntia.doc.gov /osmhome/reports/tr97343/tr97343f.html (714 words)

	[No title] (Site not responding. Last check: 2007-10-16)
		For example, a 0-simplex is a point, a 1-simplex is a line segment, a 2-simplex is a triangle, and a 3-simplex is a tetrahedron (in each case with interior).
		The term "simplex" is also used by some speakers to refer specifically to the four-dimensional figure (or polychoron) more accurately described as the "4-simplex", or even more specifically to the regular 4-simplex.
		A simplex communications channel is a one-way channel.
	www.informationgenius.com /encyclopedia/s/si/simplex.html (290 words)

	Simplex - free-definition (Site not responding. Last check: 2007-10-16)
		In geometry, a simplex is an n-dimensional figure, being the convex hull of a set of (n + 1) affinely independent points in some Euclidean space of dimension n or higher (i.e.
		For example, a 0-simplex is a point, a 1-simplex is a line segment, a 2-simplex is a triangle, a 3-simplex is a tetrahedron, and a 4-simplex is a pentachoron (in each case with interior).
		A regular simplex is a simplex that is a regular polytope.
	www.free-definition.com /Simplex.html (380 words)

	Boulder County Sheriffs Office (Site not responding. Last check: 2007-10-16)
		Red 5 - This is a new simplex (non-repeated) operations channel that is available to all departments in the County.
		For example, Channel 1 operated on a frequency of 10 and Channel 2 operated on a frequency of 20, 10 units apart.
		This was done because both channels were kind of "sloppy" and actually used frequencies anywhere from 5 to 15 for Channel 1 and 15 to 25 for Channel 2.
	www.co.boulder.co.us /SHERIFF/emergency/bcffa/radio_configuration.htm (1211 words)

	Chapter 13 : Simplex, Half-Duplex and Full Duplex
		Data in a simplex channel is always one way.
		Simplex channels are not often used because it is not possible to send back error or control signals to the transmit end.
		An example can be a consumer which uses a cable connection to not only receive TV channels, but also the same cable to support their phone and Internet surfing.
	www.geocities.com /vrcode2/network/shfh.htm (1022 words)

	[No title]
		BROWN CHANNEL -- 155.535 Simplex, CTCSS 141.3 Brown is the primary dispatch channel for UC Davis police.
		Brown is used as a secondary channel by the Davis Police when traffic on Gold is too heavy or restricted to emergencies, or the repeater is down.
		YOLO COUNTY "TAC" -- 155.595 Simplex, CTCSS 141.3 Secondary or tactical channel used by the Yolo County Sheriff and Winters Police for special operations or for non-priority communications, much as Orange is used by UC Davis.
	www.geocities.com /45peter/cayolo.html (2337 words)

	Data Communications Basics
		A channel whose direction of transmission is unchanging is referred to as a simplex channel.
		For example, a radio station is a simplex channel because it always transmits the signal to its listeners and never allows them to transmit back.
		The data rate of a channel is often specified by its bit rate (often thought erroneously to be the same as baud rate).
	www.camiresearch.com /Data_Com_Basics/data_com_tutorial.html (4380 words)

	Untitled Document (Site not responding. Last check: 2007-10-16)
		Fibre Channel is a data transfer technology for large-scale systems, which are usually scalable from single point-to-point applications to large network applications.
		Channel and Network are two basic types of data communication between processors and peripherals.
		Channels can provide a direct or switched point-to-point connection between the communicating devices, which are typically hardware-intensive and transports data at a high speed with low overhead.
	pages.cpsc.ucalgary.ca /~tangn/523/Project/fiberchannel.htm (1449 words)

	Radio Technology
		In simplex communication, there is a one-way communication between the sender or transmitter and the receiver.
		Simplex communications is nowadays mostly limited to broadcast applications.
		The same channel is used for both transmit and receive directions of transmission and simply shared over time.
	cbdd.wsu.edu /kewlcontent/cdoutput/TR502/page45.htm (321 words)

	SCRRBA - New 20kHz Band Plan (440-450MHz)
		In addition to the new narrower channel spacing plan, the community adopted a channel re-alignment scheme and schedule for present coordinees on the current mobile relay channels, directed the establishment of additional simplex channels, approved the establishment of additional, dedicated "open repeater" and "test-pair" channels, and established a permanent arbitration committee to resolve coordination disputes.
		Two new simplex channels for "ground-based communications" will be established between 446.000 and 446.500 MHz, adding to the existing two simplex channels.
		A new simplex channel will be established at 449.460 MHz for use by remotely-controlled base stations, which generally operate at high elevations.
	www.scrrba.org /Announcements/1999/20kHzBandPlan.htm (1071 words)

	July '99 Training (Site not responding. Last check: 2007-10-16)
		OA-1 is a simplex channel used to coordinate disaster response activities within the Operational Area of Orange County.
		OA-2 is a simplex channel used to coordinate disaster response activities within the Operational Area of Orange County.
		VEPO is a repeater channel used to coordinate disaster response activities by water districts and municipal water departments in the Orange County Operational Area.
	www.ocraces.org /Training/training_jul99.html (530 words)

	Fusion MSPP Service Developer's Reference Manual (6748-16): Programming Model
		Create a simplex encode channel of one type (for example, G.711 or G.723), a decode channel of another type (for example G.729A or G.726), and connect them both to the same endpoints.
		As soon as the application transfers data to one of the connection's endpoints, the connection channel processes the data and passes it on to the endpoint at the opposite end of the connection.
		Disassociates the MSPP endpoints and MSPP channel in a specified connection (if the channel is enabled when the command is issued, the MSPP service automatically disables the connection before breaking up the connection).
	www.nmscommunications.com /manuals/6748-16/chap2.htm (4155 words)

	Part14: Simplex, Half and Full Duplex (Site not responding. Last check: 2007-10-16)
		This section briefly discusses the modes of channel operation, namely, simplex, half-duplex and full-duplex operation.
		The simplex channel also corresponds directly to Shannon's model of communication discussed earlier.
		The three modes of channel operation are simplex, half-duplex and full-duplex.
	physinfo.ulb.ac.be /cit_courseware/datacomm/dc_014.htm (468 words)

	UHF CB radio
		Emergency channel for simplex use, and repeater use where one exists.
		The C.B will display channel 1, because that is what you are receiving, but if you are using 'Duplex', then you are transmitting on 31 and receiving on 1.
		That is because the repeater receives signals on channel 31 and re-tranmsits the signals on channel 1.
	www.roity.com /rc/cbradio/uhfcb.html (314 words)

	Fusion MSPP Service Developer's Reference Manual (6748-13): Programming Model
		An MSPP channel is a linked set of functions (filters) that transform a real-time flow of voice or fax data from one form to another.
		For example, an MSPP G.711 duplex channel encodes and decodes (according to the G.711 algorithm) a two-way flow of voice data as it moves between the PSTN and packet network interface.
		For example, a duplex G.711 channel is used to connect a DS0 endpoint with an RTP endpoint.
	www.nmscommunications.com /manuals/6748-13/chap2.htm (3892 words)

	MIR Amateur Radio History
		In Europe the channel was near a popular Simplex channel.
		It seemed some of the simplex operators did not like to share the channel for the 10 minute passes (maximum usage in 24 hours is less than 60 minutes of Mir activity).
		The frequency 145.550 was a good choice for most of the world, and it was easy for simplex operators to share the channel.
	www.ik1sld.org /mirex_history.htm (2472 words)

	Crossband Operation (Site not responding. Last check: 2007-10-16)
		A dual-band mobile rig capable of being configured as a simplex cross-band repeater (CBR) can be a useful tool during CCAR activation or public service events where net operations are being conducted on a 2 meter simplex frequency.
		The CBR effectively translates back and forth between a 2m simplex channel and a 70cm simplex channel.
		In this mode, the mobile rig is configured as a one-way simplex repeater, receiving a 70cm simplex signal and retransmitting it out on the CCAR 2-meter repeater’s input frequency.
	www.chesco.com /~kucharik/corssband_operation.htm (849 words)

	Optical Isolators, Dual Channel, Simplex
		The F2900 series dual channel fiber optic isolators are designed for passing telemetry, clock, data or any async or serial data stream.
		Two different versions are available including one transmitter module, with two data channels and one receiver module with 2 data channels.
		The dual channel isolators transmit data in one direction only, thus preventing data from returning in the opposite direction which helps assure data security.
	www.versitron.com /isolators-links.htm (437 words)

	[No title] (Site not responding. Last check: 2007-10-16)
		Simplex /Repeater Code (One digit, B) for Simplex B = 0; for Repeater, B = 8 3.
		Transmit CTCSS Code (Two digits, YY); Don't enter if simplex channel and tone is same as receive.
		Press the channel number that you want this data stored.
	home.comcast.net /~kc6ovd/docs/regency/RH256.txt (236 words)

	AUTOMATIC VOICE RELAY SYSTEM
		For one channel (the first), simply connect a local VOICE SIMPLEX frequency in your area to the Internet with IPhone.
		Although the primary advantages of 10m are the ability to add the band to existing mobiles and Igates without interference to priority use of the other APRS and mobile bands, there is supposedly an additional advantage of extended simplex range on 10m, although so far, some practical experience has not shown the same conclusions.
		Since most 10m activity is for the DX when the band is open, my disussions with other operators reveals very little experience with it as a Base-to-mobile channel, so this paper and this subject is ripe for further experimentation.
	web.usna.navy.mil /~bruninga/avrs/avrs2000.htm (1720 words)

	CATHOLIC ENCYCLOPEDIA: Free Will
		Objects or events viewed merely as possible, God is said to apprehend by simple intelligence (simplex intelligentia).
		In the series of customary acts which fill up our day, such as rising, meals, study, work, etc., probably the large majority are merely "spontaneous" and are proximately determined by their antecedents, according to the combined force of character and motive.
		There is nothing to arouse special volition, or call for interference with the natural current, so the stream of consciousness flows smoothly along the channel of least resistance.
	www.newadvent.org /cathen/06259a.htm (4932 words)

	ALTOONA BLAIR COUNTY SCANNER FREQUENCY GUIDE
		Most CAP vans and trucks have radios that operate in the 143, 148, and 149 segments only, so these are by far the most active of the channels.
		The ISR (Inter-Squad Radio) channels are used nationwide by nearly every government agency for low-power point-to-point communications.
		The NTIA issued these channels because FRS/GMRS radios are not allowed to be used for government communications.
	www.angelfire.com /pa2/scanner/guide/misc/cap.html (464 words)

	Multiplexer, DSU, Data Concentrator, RS-232, mux
		Data Concentrator, 8 to 32 channel, simplex or duplex
		The SRDC data concentrator multiplexes 8, 16, 24 or 32 asynchronous channels over a synchronous or asynchronous composite with the ability to operate over simplex or full duplex lines.
		The SRDC data concentrator composite is synchronous or asynchronous simplex or full duplex lines either analog or digital.
	www.dcbnet.com /datasheet/srdcds.html (525 words)

	[No title] (Site not responding. Last check: 2007-10-16)
		Without most of the urban sprawl that is in some of the larger surrounding counties; Preble County does not have the crime rate the larger counties have.
		154.190 (simplex) PL 173.8 - Preble County is served by many volunteer fire departments across the county.This frequency is one to keep your ears open too.
		This is the Dayton chapter of Skywarn and can get pretty exciting to listen to at times when rough weather rolls through the area.
	home.woh.rr.com /davescan/Freqs.html (468 words)

	Frequencies
		A secondary channel is used for coordination among City departments.
		This channel is a conventional analog simplex channel.
		Public Works also uses conventional analog simplex channel of 155.940 MHz.
	www.ci.rolling-meadows.il.us /rmpd/frequencies.htm (139 words)

	mcntp: mcntp over a simplex satellite channel
		Normal IP-Multicast sessions rely - even when they are only simplex in terms of data packets flowing unidirectionally - on a bidirectional circuit: the receiver that wants to receive multicast packets must inform the sender (in an indirect way) that he wants to send packets.
		On a satellite connection this back channel is not necessarily on the same satellite back, but via some terrestrial circuit.
		This memo describes a way to send netnews articles over IP multicast on a satellite connection.
	mcntp.sourceforge.net /mcntp-sat.html (1088 words)

	Asterisk Mailing List: Re: [Asterisk] simplex radio channel, i (Site not responding. Last check: 2007-10-16)
		In reply to: Chris Albertson: "[Asterisk] simplex radio channel, interactive voice"
		Reply: Chris Albertson: "Re: [Asterisk] simplex radio channel, interactive voice"
		This archive was generated by hypermail 2b29 : Sat Sep 17 2005 - 04:08:29 CDT
	www.marko.net /asterisk/archives/0302/0226.html (257 words)

	Asterisk Mailing List: RE: [Asterisk] simplex radio channel, i (Site not responding. Last check: 2007-10-16)
		Maybe in reply to: Chris Albertson: "[Asterisk] simplex radio channel, interactive voice"
		I want to write a channel driver for a simplex radio.
		This archive was generated by hypermail 2b29 : Sat Sep 17 2005 - 04:08:30 CDT
	www.marko.net /asterisk/archives/0302/0262.html (259 words)

	Double 45 Radio Group ? The 145dot45 Simplex Channel. Also Secondary Channel of 145.670 MHz
		Contact Us We are the Double 45 Radio Group.
		We meet on 145.450 MHz and 145.670 MHz simplex.
		You're most welcome to chat with us, if you are a ham & happened to be in the city of Kuching, Sarawak.
	www.freewebs.com /fourfive (62 words)

	Urban Entomology [Ebeling Chap. 9 part 3] Pests Attacking Mand and His Pets (Site not responding. Last check: 2007-10-16)
		Fleas have piercing-sucking mouthparts (figure 46, C, chapter 4), the principal elements of which are the grooved labrum and a pair of sharp, swordshaped mandibles.
		The concave inner sides of the mandibles, together with the labrum, form the sucking channel (Ewing and Fox, 1943).
		In some species, a conspicuous transverse row of spines is located just above the mouthparts, and is called the genal comb or ctenidium.
	www.entomology.ucr.edu /ebeling/ebel9-3.html (19692 words)

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