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| | Radio - Wikipedia, the free encyclopedia |
 | | Tractor beams: Radio waves exert small electrostatic and magnetic forces. | | | Personal radio services such as Citizens' Band Radio, Family Radio Service, Multi-Use Radio Service and others exist in North America to provide simple, (usually) short range communication for individuals and small groups, without the overhead of licensing. | | | In the 1920s, amplifying vacuum tube radio receivers and transmitters. |
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http://en.wikipedia.org/wiki/Radio
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| | Software-defined radio - Wikipedia, the free encyclopedia |
| | The basic arrangement of the radio receiver used an antenna feeding an amplifier and down-converter (see mixer) feeding an automatic gain control, which fed an analog to digital converter that was on a computer VME bus with a lot of digital signal processors (Texas Instruments C40s). | | | GNURadio is a project to implement software-defined radio as free software. | | | The software of a software radio is usually very modular. |
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http://en.wikipedia.org/wiki/Software_radio
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| | Howstuffworks "How Radio Works" |
| | SW/FM/AM/DAB Radio, Portable Design, Analog Tunning, 1 oz | | | AM/FM/Weather/TV Radio, Pocket Design, Digital Tunning, LCD Display, 25 Station Presets, 3.3 oz | | | In this article, we will explore the technology of radio so that you can completely understand how invisible radio waves make so many things possible! |
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http://electronics.howstuffworks.com/radio.htm
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| | Ham Radio Software |
| | MAC Software -- Blackcat Software -- Science and Radio related software. | | | TRX-Manager -- Yaesu, Icom, Kenwood and TenTec Radios | | | Can be controlled by computer directly connected to the radio equipment via the CI-V interface, or via a local LAN or via the Internet. |
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http://www.ac6v.com/software.htm
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| | Radio - Wikipedia, the free encyclopedia |
| | Radio amateurs use all forms of encoding, including obsolete and experimental ones. | | | Radio was unique among dramatic presentation that it used only sound. | | | Radio teletypes usually operate on short-wave (HF) and are much loved by the military because they create written information without a skilled operator. |
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http://en.wikipedia.org/wiki/Radio
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| | Radio Waves |
| | Because radio waves are larger than optical waves, radio telescopes work differently than telescopes that we use for visible > light (optical telescopes). | | | Since then, astronomers have developed sophisticated systems that allow them to make pictures from the radio waves emitted by astronomical objects. | | | Because the wavelengths of radio light are so large, a radio telescope must be physically larger than an optical telescope to be able to make images of comparable clarity. |
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http://imagers.gsfc.nasa.gov/ems/radio.html
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| | Radio - Wikipedia, the free encyclopedia |
| | AM broadcast radio sends music and voice in the Medium Frequency (MF—0.300 MHz to 3 MHz) radio spectrum. | | | Radio amateurs are able to use frequencies in a large number of narrow bands throughout the radio spectrum. | | | Radio teletypes usually operate on short-wave (HF) and are much loved by the military because they create written information without a skilled operator. |
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http://en.wikipedia.org/wiki/Radio
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| | ECom - Packet |
| | Packet - the name of the piece of data sent from your computer to another. | | | The device that acts as an interface between the computer and the radio. | | | Packet radio consists of a computer, Terminal Node Controller (TNC), a radio and some cables connecting all of the parts. |
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http://www.w0ipl.com/ECom/pkt.htm
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| | Guardian Unlimited Technology Technology Radio active revolution |
| | Software radio, on the other hand, uses ordinary PC technology to achieve the same result. | | | In a positive move, the first handheld software radio was unveiled in Washington in May. Instead of specialist radio hardware, a software radio uses a simple receiver to throw the entire contents of a range of frequencies into computer memory, where software - and not hardware - does the signal processing. | | | The company has done extensive research, as has the free software community - the code behind the GnuRadio project is freely downloadable from its site (www.gnu.org/software/gnuradio/gnuradio.html). |
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http://technology.guardian.co.uk/online/story/0,3605,994679,00.html
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| | Area of Expertise |
| | Software radio, SWR (or software defined radio, SDR), is a radio, whose channel modulation waveforms are defined in software. | | | The benefits of the digital technology sometimes even surpass the performance that may be poorer as a consequence of using software radio technology. | | | In the beginning, software radio was feasible only in the military applications, where extreme performance and versatility are needed. |
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http://www.vtt.fi/tte/rd/software-radio/Swr-radio.htm
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| | Packet radio - definition of Packet radio in Encyclopedia |
| | Packet radio (PR) is a data transmission mode used in amateur radio, which is based on protocols similar to those on the internet, in particular AX.25, which is a subform of the X.25 protocol. | | | These packet stations also have a terminal (which may be emulated by a computer), to allow operator interaction with the TNC, but automatic packet radio stations do not need a terminal. | | | These limitations made sense in the context of the noisy, bandwidth-limited channels encountered in earlier packet radio implementations. |
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http://encyclopedia.laborlawtalk.com/Packet_radio
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| | Cognitive radio - Wikipedia, the free encyclopedia |
| | An example of Unlicensed Band Cognitive Radio is IEEE_802.19 [7]. | | | Cognitive radio is a paradigm for wireless communication in which either network or wireless node itself changes particular transmission or reception parameters to execute its tasks efficiently without interefering with the licensed users. | | | The idea of Cognitive radio was first presented officially in the article by Joseph Mitola III and Gerald Q. Maguire, Jr. |
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http://en.wikipedia.org/wiki/Cognitive_radio
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| | Software Radio |
| | GNU Radio is a free software toolkit for learning about, building and deploying software radios. | | | Software radio is the art and science of building radios using software. | | | By radio, I mean any kind of device that intentionally transmits or receives signals in the radio frequency (RF) part of the electromagnetic spectrum. |
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http://www.comsec.com/software-radio.html
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| | Blog Software |
| | Radio Userland News and Discussion Groups have been very excited about the partnership that lets Radio users be in the Salon community and the Radio community. | | | Blog Software MT and RU has Radio Free Blogistan Links to comparison with Radio Userland. | | | Blog Software MT and RU has Radio Free Blogistan link to comparison with Radio Userland |
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http://radio.weblogs.com/0107846/stories/2002/10/03/blogSoftware.html
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| | ARRLWeb: ARRL Home Page |
| | "I talked with probably 300 educators specifically about ARRL-related programs such as the Teachers Institutes, 'The Big Project' and Amateur Radio on the International Space Station (ARISS)," he said. | | | "All of electronics and radio boils down to how we manipulate these two fundamental principles," he concluded. | | | Honoring Excellence in Ham Radio Public Relations: McGan Award Nomination Deadline Looms (Apr 10, 2006) -- The ARRL is encouraging nominations for the 2006 Philip J. McGan Memorial Silver Antenna Award. |
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http://www.arrl.org
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| | Software Radio |
| | The Radio Function Library is a software set that expresses basic radio functions such as control programs for hardware - DAC and ADC as well as modem function embedded in DSP. | | | The software radio exploits the computational power of the run-time reconfigurable Computing Platform. | | | A software radio is a radio whose channel modulation waveforms are defined in software |
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http://www.iis.ee.ic.ac.uk/~frank/surp99/article2/mshh97
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| | Howstuffworks "How Radio Works" |
| | In this article, we will explore the technology of radio so that you can completely understand how invisible radio waves make so many things possible! | | | Whether we are talking about a cell phone, a baby monitor, a cordless phone or any one of the thousands of other wireless technologies, all of them use radio waves to communicate. | | | "Radio waves" transmit music, conversations, pictures and data invisibly through the air, often over millions of miles -- it happens every day in thousands of different ways! |
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http://www.howstuffworks.com/radio.htm
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| | Amateur Packet Radio FAQ |
| | Packet radio is so named because it sends the data in small bursts, or packets. | | | Packet radio takes any data stream sent from a computer and sends that via radio to another amateur radio station similarly equipped. | | | Advancements in computer soundcards means that you could use your computers soundcard for some digital modes, including packet radio. |
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http://www.taurus2.plus.com/gb7imk/pktfaq.htm
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| | Introduction to Packet Radio - Part 1 |
| | Packet seems to offer something different from other facets of Amateur Radio, yet it can be used for everything from a local QSO to a DX contact thousands of miles away, for electronic mail, message transmission, emergency communications, or just plain tinkering in the world of digital communications. | | | Packet Radio was one of the major developments to hit the world of Amateur Radio and thousands of hams soon caught the "packet bug". | | | In 1984, a great deal of packet experimentation was done, software for packet bulletin board systems was developed, and packet radio started becoming more and more popular all across the U.S. and Canada. |
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http://www.choisser.com/packet/part01.html
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| | Packet Radio Under Linux Linux Journal |
| | Operating an amateur radio station requires an operator's license, which can be obtained by passing an examination that covers radio theory, regulations, operating practices and basic electronics. | | | As well as being fun, packet radio under Linux taught me a lot about networking, much of which is also applicable to Ethernet, X.25 and other network protocols. | | | Packet radio is one such method in which text is encoded as binary data and transmitted via radio in groups of data, called packets. |
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http://www2.linuxjournal.com/article/2218
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| | Software-Defined Radio |
| | Software-defined radio (SDR) refers to a radio device whose function is not fixed in hardware, but rather can be programmed by software using digital signal processing techniques. | | | The analog portions of the software-defined radio are kept to a minimum, allowing the radio to become a cellular telephone, a GPS receiver, an amateur packet radio, or any other sort of radio transmitting or receiving device. | | | The GNU Software Radio is a code base of free software that performs digital signal processing using a personal computer and freely available RF receiver front-end designs. |
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http://www.ncassr.org/projects/sdr.html
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| | Radio - Internet-Encyclopedia.com |
| | Radio teletypess usually operate on short-wave (HF) and are much loved by the military because they create written information without a skilled operator. | | | In 1994, the U.S. Army and DARPA launched an aggressive, successful project to construct a software radio that could become a different radio on the fly by changing software. | | | 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. |
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http://www.internet-encyclopedia.com/ie/r/ra/radio.html
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| | Salon.com Technology Radio Free Software |
| | The only additional hardware components needed are a low-cost R.F. tuner, to pull the radio waves out of the air, and an analog-to-digital converter to convert each signal into digital samples. | | | Since the days of Univac, computer programmers have written software to mimic the functionality of everything from mechanical calculators to videocassette recorders. | | | At its most basic level, GNU Radio is an attempt to do for radio-software developers what the original GNU Project did for Unix developers -- that is, provide a common set of nonproprietary tools that can be ported from one device to the next. |
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http://www.salon.com/tech/feature/2002/12/18/gnu_radio
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| | Cognitive Radio: Making Software Radios More Personal |
| | Since a software radio has a choice of RF bands, air interfaces, data protocols, and prices to be paid, in competition with other users, the domain is analogous to a chess game. | | | He is internationally recognized as the "Godfather" of the software radio, having coined the term in 1991 to signal the shift in radio technology from digital radio with "80 percent hardware and 20 percent software" to radios in which 80 percent of the value added of the radio is in the software. | | | The services enhancements to be enabled by cognitive radio are motivated by a set of use cases [3] that require the radio to have an advanced degree of "understanding" of topics illustrated in Fig. |
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http://www.comsoc.org/pci/private/1999/aug/Mitola.html
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| | RadioDocs |
| | The Radio method is straightforward but the same cannot be said for the way that browsers themselves are implemented by their creators. | | | Radio is (choose one) a weblog on your personal computer, a website published to the Internet, a desktop Windows application or all of the above. | | | Radio gives you two URLS: an entirely local one on your own computer where you will compose your weblog content and a public, external URL in the location where your content has been published. |
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http://radiodocs.userland.com
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| | SDR Forum FAQs |
| | Software Defined Radio (SDR) is a collection of hardware and software technologies that enable reconfigurable system architectures for wireless networks and user terminals. | | | The radio is implemented using hardware components only and cannot be modified except through physical intervention. | | | SDR-enabled devices (e.g., handhelds) and equipment (e.g., wireless network infrastructure) can be dynamically programmed in software to reconfigure the characteristics of equipment. |
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http://www.sdrforum.org/faq.html
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| | The right choice depends on the kind of boss you have |
| | The Software architecture of a cognitive radio consists of a set of computational models of itself, its user, its environment etc which attribute to the self awareness. | | | The Software radio is a platform on which a Cognitive Radio is built on. | | | A layer of “Cognition” is implemented on a basic software radio to render it with cognitive ability. |
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http://bass.gmu.edu/seminars/bhimrao.htm
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| | Hexapedia - Software-defined radio |
| | The basic arrangement of the radio receiver used an antenna feeding a amplifier and down-converter (see mixer) feeding an automatic gain control, which fed an analog to digital converter that was on a computer VME bus with a lot of digital signal processors (Texas Instruments C40s). | | | GNURadio is a project to implement software-defined radio as free software. | | | The software of a software radio is usually very modular. |
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http://www.hexafind.com/encyclopedia/software_radio
(1869 words)
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| | White-papers Articles Technical papers Software defined radio |
| | This helps in building reconfigurable software radio systems where dynamic selection of parameters for each of the above-mentioned functional modules is possible. | | | Software-Defined Radio (SDR) is a rapidly evolving technology that is receiving enormous recognition and generating widespread interest in the telecommunication industry. | | | SDR technology promises to solve these problems by implementing the radio functionality as software modules running on a generic hardware platform. |
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http://www.wipro.com/insights/softwareradio.htm
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