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Topic: Narrowband modem

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Wideband modem

Barrage jamming

Network interface device

Federal Standard 1037C

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	The KD2BD 9600 Baud Modem
		The Bell-202 AFSK modem standard that is still widely used for the majority of 1200 bit per second VHF-FM packet radio communications uses audio tones of 1200 Hz and 2200 Hz to represent the binary '1's and '0's of packet radio's HDLC baseband serial data.
		The modem sends a series of pulses generated by operational amplifier U9D to the groundstation receiver to tune it lower in frequency during a satellite pass in compensation for doppler shift.
		Please consult the operating manual of the transceiver used in conjunction with this modem to determine whether a positive pulse or a switch to ground is necessary to tune the receiver lower in frequency via the microphone connection, and make the appropriate connections between the modem and the ground station transceiver.
	www.amsat.org /amsat/articles/kd2bd/9k6modem/9k6modem.html (6872 words)

	The 220MHz ITS Spectral Allocation: Potential, Pitfalls and Applications
		In a narrowband system the duration of the modulation symbols are very long in comparison to the multipath delay spread on the channel and hence all the multipath is effectively combined into a single multiplicative distortion process (i.e., frequency nonselective fading [6]).
		A wireless modem operating at 220MHz has circuits operating at a much higher frequency and hence several operating characteristics must be considered in a modem design.
		Modem products will be forthcoming which incorporate multiple operating modes (mobile, point-to-point, and multiple access) and sophisticated designs using large QAM constellations, equalization, pilot symbol assisted modulation, forward error control coding, and diversity.
	www.comsoc.org /ci/private/1996/oct/Fitz.html (8619 words)

	Architectures for Mobile RF Convergence:Wireless Design & Development (Site not responding. Last check: 2007-10-13)
		Modern baseband modems operate in the digital domain, either employing dedicated hardware or a digital signal processor, with the necessary ADCs and DACs positioned between the modem and the RF transceiver.
		The alternative is to integrate both the modems and their associated RF transceivers into one large CMOS chip, using the RF capabilities of modern CMOS processes to cope with the RF part.
		Narrowband modems such as those required for Bluetooth and GSM/GPRS are typically hard-wired.
	www.wirelessdesignasia.com /article.asp?id=2716 (2139 words)

	MilSpec Communications: Harris RF-5710 HF Radio Modem
		Your modem configuration will have to be changed in accordance with table 3 if you are transmitting Baudot or ASCII alphabet.
		For interoperability with installations equipped with the Harris RF-3466A modem or installations with the Harris RF-5000 series of HF transceivers, select any of the available FSK modes.
		When selecting a modem waveform and data rate, please take into consideration the type of HF radio equipment you are using.
	www.milspec.ca /modems/rf-5710.html (1496 words)

	Broadband Barriers: Partnering Effectively with Dominant Cable ISPs
		Currently, most cable modems are sold through cable modem access providers themselves, but industry players are gearing up for the inevitable shift from carrier distribution to retail.
		Although cable modem installations will still require a visit by cable ISP technicians to install a new cable outlet and test the connection, retail distribution of standardized, bundled modems will be an important step toward transforming cable Internet service into a plug-and-play application.
		The choice on the narrowband front is far greater: Five ISPs have a reach of over one million subscribers each, and portals offer even more diversity in terms of their audiences and reach.
	sales.jup.com /research/bas/samples/reports/9905/bas26-02.html (2500 words)

	AOL Broadband
		You agree to use and maintain the modem, and all other hardware delivered to you, in compliance with the applicable operating instructions provided by AOL Canada.
		The modem is your property and its use and support is governed by the terms of the transaction you entered into with the retailer.
		Demarcation is a term that describes the point near your home where the telephone company's responsibility for the local telephone line ends and your responsibility for the telephone line begins, called inside wire.
	canada.aol.com /broadband/AOL_Broadband_tos.htm (3651 words)

	Modem for PS2 from Sun Denshi coming this March. (Site not responding. Last check: 2007-10-13)
		Modem for PS2 from Sun Denshi coming this March.
		Sun Denshi says that they are planning on releasing their 56K narrowband modem next month in March.
		The modem will hook into a USB port and come packaged with a browser that will grant PS2 owners the ability to go online.
	www.psxextreme.com /scripts/news2/pnew.asp?newID=454 (122 words)

	PROVANTAGE: Listing of Desktop Modems Page 2 (Site not responding. Last check: 2007-10-13)
		The modem is designed for use in Windows-based systems with a minimum of a 266 MHz processor....
		This popular internal modem is renowned for its reliable connections and ease of use.
		This modem, weighing in at 2 ounces, is ideal for mobile users who want e-mail and Internet access on the road.
	www.provantage.com /~66MODDSK2.htm (1183 words)

	Lancaster University
		Narrowband using Modem - slow 'monthly contract' or 'pay as you go' available.
		Narrowband using Modem to the University - RAS (Remote Access Service) - slow access to the University network.
		Using VPN over Broadband or Narrowband is recommended for people wishing to have access to their University network filestore (H: Drive).
	www.lancs.ac.uk /iss/ras (453 words)

	Australian Broadband - The Lingo, Jargon and Slang explained-
		Cable Modems are boxes/devices that enable you to hook up your computer to a local cable (coax, fibre optic etc.) operators line and receive data (Optus Cable and Telstra Cable).
		Most good 56Kbps modem connections will be able to transfer at a rate of 5/6KBps, thus a 20K document would take just 4 seconds to download.
		Modulating Demodulators (modems) modulate outgoing digital signals from a computer or other digital device to analogue signals for a conventional copper twisted pair telephone line and demodulates the incoming analogue signal and converts it to a digital signal for the digital device.
	www.broadbandinternet.net.au /broadbandinternet/lingo (1275 words)

	The Heartland Institute: Access to the Internet: Regulation or Markets? (Policy Study)
		Until the cable modem roll-out began in early 1999, the local telephone companies were very slow to deploy DSL--even though the technology is a decade old.
		Still, cable modems do have one important competitive advantage: A cable modem user can be 30 miles away from the cable provider, but the DSL user can be only a little more than three miles from the phone company.
		Satellite modems share one weakness with cable modems: both are "shared bandwidth pipes." So the more users of a given satellite (or cable television line) at a given time, the slower the transmission speed.
	www.heartland.org /archives/studies/kopel-ps.htm (18161 words)

	Telecommunications Industry Association - Communications in the 21st Century - Article Index (Site not responding. Last check: 2007-10-13)
		This service model is the same as today’s narrowband remote access model, although the networking components are different and use different technologies.
		For narrowband remote access, this is achieved through the PSTN with its universal connectivity.
		In contrast, POTS is unavailable during remote access sessions when using a narrowband modem.
	tia.atalink.co.uk /html/p064.htm (2726 words)

	LinuxElectrons - Conexant Introduces Modem with Intel's New Audio Spec
		HD Audio is an end-to-end audio specification that defines the controller, link and board implementation of audio and modem hardware, both of which are required and operate on the same bus.
		Conexant has a long history of technological innovation and leadership in modem technology, including development of the world's first dial-up modem chip, and has shipped more than 500 million modems worldwide.
		The company's highly reliable modem chipsets can be found in desktops, notebooks, handheld devices, video game consoles, set-top boxes, and other platforms such as point-of-sale terminals, providing universal Internet access to millions of users worldwide.
	www.linuxelectrons.com /article.php/20040126105729288 (454 words)

	white papers
		Current Internet access via a 28.8, 33.6, or 56 kbps modem is referred to as voice band or narrowband modem technology.
		An analog modem essentially carries data by using the circuit-switched telephony infrastructure, originally designed to handle voice traffic.
		As the number of users connecting to the Internet through analog modems grew, carriers were forced to build out both their voice and data networks, since an internet connection using an analog modem must pass through the voice infrastructure to get to the data network.
	www.shakerinvest.com /reports/whitepapers.htm (723 words)

	PlayStation 2 narrowband modem on the way - Gaming Age
		Conexant is also the technology behind the modem in the Dreamcast and will also drive the narrowband capabilities of the Gamecube.
		Conexant has also announced that it has developed dedicated modem drivers for the PlayStation 2, and has completed the adaptation of the driver to the TCP/IP, point-to-point protocol (PPP) stack and/or browser software, which will be adopted by leading software developers such as Access Co. Ltd., SN Systems Limited and Planetweb Inc./ERGOSOFT Corp.
		The modems should be avialable in the first quarter of the year.
	www.gaming-age.com /news/2001/1/5-21 (303 words)

	AN/WSC-6
		The AN/ WSC-6(V) 2 is installed aboard numbered fleet flagships and uses the OM-55(V)/ USC spread-spectrum AJ modem and the ComQuest CQM-248A phase-shift keying (PSK) narrowband modem and has one or two 7-foot antennas.
		The (V) 2 terminal uses an 8-kW transmitter with either the spread-spectrum modem or the narrowband modem or both if an IF patch is used.
		The (V) 2 can also use a 350-watt TWTA with the narrowband modem in conjunction with the 8-kW Klystron power amplifier with the spread-spectrum modem if the diplexer is used.
	www.fas.org /spp/military/program/com/an-wsc-6.htm (827 words)

	RPGamer > Getting Online with PlayStation 2
		Players using narrowband connections will soon discover that they can not play their network games to the fullest potentional.
		The general consensus is that gamers in Canada have a slightly more difficult time getting online, especially those with certain cable modem services, as several Canadian ISPs will not have finished necessary upgrades to their infrastructure until the end of the year.
		It is not exactly clear why the decision was made to have gamers mail in the coupon to get the game, instead of including it with the adapter package, though it is possible Sony may change the freebie in the future.
	www.rpgamer.com /features/ps2na/ps2networkadapter.html (1225 words)

	RF400: 900 MHz Spread Spectrum Radio/Modem
		Spread spectrum radios spread the normally narrowband information signal over a relatively wide band of frequencies.
		It can serve as a field modem/radio while connected to the datalogger or as a base station modem/radio when connected to a computer.
		The RF400 modem can also be used for general purpose wireless data communications.
	www.campbellsci.com /rf400 (193 words)

	Compare Prices and Read Reviews on Playstation 2 Network Adaptor SCPH-10281 at Epinions.com
		For those who are completely computer illiterate like I was when I first started messing with my DSL modem, the easiest set-up is to just follow the steps, and choose Automatic so you don’t have to mess with all the numbers and specifics.
		Getting a DSL or Cable modem hooked up can be a little bit expensive, most ISP's ranging in the 30-40 dollar area, but just think of the type of quality in your internet service you're getting.
		Broadband users may have to tinker with their modem settings and have a little talk with that ISP's tech service to finally get the stuff up and running, but other than that it's easy as pie.
	www.epinions.com /content_81988324996 (1905 words)

	Tiscali Broadband (Site not responding. Last check: 2007-10-13)
		Tiscali offers technical support on all modems purchased during the registration process.
		If you choose to use your own modem we may have to refer you back to your supplier for technical advice.
		Please note: your standard 56kbps narrowband modem will not support Broadband.
	www.tiscali.co.uk /products/broadband/build/modem_support.html (44 words)

	Roadrunner
		He pointed out that ROAD RUNNER'S original content and the Internet will be delivered at speeds up to hundreds of times faster than conventional narrowband modem connections.
		The CyberSURFR modem connects subscriber personal computers to the HFC system via a standard 1OBase-T 802.3 LAN connection specifically designed for data communications for on-line services, Internet access, telecommuting and other emerging services for home and business PC users.
		The modem offers throughput speeds of up to 10 Mbps in the downstream path and upstream throughput up to 768 Kbps.
	www.ncns.com /cablmod1.html (532 words)

	Equology - the small business solution
		For those of you with budgets that stretch a little further, cable modem and ADSL connections now offer faster permanent connections to the Internet with the same advantages.
		By far the most common are slower 'narrowband' devices such as internal modems that come with your PC or ISDN.
		Connecting to the Internet with a dialup modem is by far the simplest and cheapest form of access, making use of the modem that came with your multimedia PC and your existing analogue phone line.
	www.equology.com /content/en/scripts/feature-unlimitedaccess.asp (635 words)

	Modems
		A MODEM is a communications device that converts one form of a signal to another that is suitable for transmission over communication circuits,
		Modems of all kinds in New, Refurbished, and Used Condition
		Here are links to SOME of the modems we carry from Telenetics, Motorola, UDS, Codex, Starcomm, and GDC
	www.data-connect.com /Modems.htm (645 words)

	QUALCOMM Press Center - QUALCOMM's Globalstar Modem to be Integrated Into Norsat's Narrowband Digital Data Terminal
		Using the QUALCOMM Globalstar Packet Data Modem as a core communications component, Norsat will design and integrate the necessary interface circuits and external housings as required for each application.
		In December 1999, Norsat announced plans to distribute Globalstar USA satellite-based telephony services, as well as a new narrowband data service based on a proprietary terminal that will enable remote locations to send operations and transaction data for financial, monitoring, diagnostic, and other purposes, and to receive information in response.
		Norsat Narrowband Networks specializes in voice and data products and services for the Globalstar satellite constellation.
	www.qualcomm.com /press/releases/2000/press310.html (596 words)

	narrowband - OneLook Dictionary Search
		Tip: Click on the first link on a line below to go directly to a page where "narrowband" is defined.
		Narrowband : English-Chinese Dictionary of Graphic Communications (Big 5) [home, info]
		Phrases that include narrowband: narrowband analysis, narrowband filter, narrowband jamming, narrowband modem, narrowband noise, more...
	www.onelook.com /cgi-bin/cgiwrap/bware/dofind.cgi?word=narrowband (141 words)

	PlayStation 2: PlayStation 2 Online Games FAQ at Ps2Fantasy.com
		The adaptor has a built-in V90 modem and 10/100 Base-TX Ethernet interface for broadband connection where you can plug your ADSL or Cable modem.
		Using your USB modem to play with your PlayStation 2 is certainly possible, also with PlayOnline games and services (even if, strangely, PlayOnline website gives a negative answer to this question), but you can't connect it straightly to the USB connection on the front of the console.
		To connect your USB modem to the PlayStation 2, the best solution is leaving the modem connected to your PC, and then setup an Internet Connection Sharing connection between the PC and the PlayStation 2.
	www.ps2fantasy.com /hardware/ps2/online.php (2029 words)

	Bristol Repository of Scholarly Eprints (ROSE) : A multilevel differential modem for narrowband fading channels (Site not responding. Last check: 2007-10-13)
		A multilevel differential modem for narrowband fading channels
		The authors analyze the design and performance of a differential receiver, including simulated results for operation in an existing PMR scenario in the UK.
		Practical considerations for the construction of such a modem are also included.
	hdl.handle.net /1983/566 (220 words)

	Narrowband Cellular Radios Modems
		Narrowband Cellular Radio AW100 Wireless Unlicensed RF Modem VHF 150 - 170Mhz
		Narrowband Cellular Radio Receive Only Data Modem AWRx100 Wireless Unlicensed RF modem VHF 150 - 170Mhz
		Narrowband Cellular Radio Modem AW200 Wireless Unlicensed RF Wireless modem VHF 220 to 235MHz band
	www.completebuildingsystems.com /CBSinc_Narrowband_Cellular_Radios.htm (229 words)

	Secure Computing: SnapGear
		SnapGear's configurable firmware is based on embedded Linux and provides a virtually unlimited range of precise tuning options for such elements as QoS (Quality of Service), VPN tunnel topology, routing, and fine-grained firewall rule sets.
		If the broadband connection is lost, the SG300 can fail over in seconds to the narrowband connection, ensuring maximum uptime.
		SG560 – For larger offices or where higher performance is needed, the SnapGear SG560 includes all the features of the SG300 and also has a robust metal case, hardware encryption acceleration for better VPN performance, and port-based VLAN capability offering up to five separate security zones.
	www.securecomputing.com /index.cfm?skey=1485 (1452 words)

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