Refimprove date June 2009 Rivet Amber , an Boeing RC 135 RC 135E , 62 4137, operating out of Shemya Shemya AFB , went down in the Bering Sea on June 5, 1969. Despite a thorough search of the area, no wreckage and no survivors were ever found. The best theory is that the plane suffered some sort of catastrophic mechanical failure, as the last radio contact from the aircraft mentioned vibration in flight . Rivet Amber was returning to Eielson Air Force Base Eielson AFB for maintenance with a crew of 19 on board. Citation needed date June 2009 Last Radio Transmission The last radio contact with Rivet Amber began about 45 minutes after takeoff at 0936 Local 1736 Coordinated Universal Time Zulu . Rivet Amber was under the call sign Irene 92. 1736 Zulu Rivet Amber Elmendorf Airways, Elmendorf Airways, Irene 92, Irene 92, over. Elmendorf AFB Irene 92, Elmendorf, Go Ahead. RA Elmendorf Airways, Irene 92 experiencing vibration In flight. Not certain of the Emergency. We have the aircraft under control, Irene 92. 1737 Zulu EAFB This is Elmendorf. You say you re not declaring an Emergency. Is that Charlie? RA Keying XMTR, followed by heavy breathing RA Roger Ahh Keying XMTR Ahh Keying XMTR, then silence RA Crew Go To Oxygen. EAFB This is Elmendorf. Say again? Irene 92, Elmendorf? RA Keying XMTR EAFB Irene 92, Elmendorf? 1738 Zulu RA Keying XMTR 1739 Zulu EAFB Irene 92, Irene 92, Elmendorf, Elmendorf RA Keying XMTR RA Keying XMTR RA Keying XMTR Unidentified key clicks Keying XMTR continued until 1822 Zulu. No further positive contact with Rivet Amber was made after 1737 Zulu. Post Incident Unable to make contact with Rivet Amber, Col. Leslie W. Brockwell, commander of the 6th Strategic Wing, initiated a search and rescue. Both planes and Coast Guard searched the waters from Shemya to the Alaska mainland. For two weeks, the water was patrolled for any sign of the plane or survivors, but nothing was ever found. The entire crew was presumed lost at sea. List of Crew Lt Col Charles ... more details
Hokey can refer to wiktionary hokey Handover Keying technologies addressing seamless migration of secure wireless connections from one network to another. The name of a particular House elf in the fictional Harry Potter series A misspelling of Hokie , the mascot of Virginia Tech Phony and obviously contrived Hokey Wolf , a Hanna Barbera cartoon character. See also Hokey pokey disambiguation disambig ... more details
Coquelet can mean Coquelet, a type of multiple frequency shift keying signal Coquelet, another name for a poussin chicken disambig Short pages monitor This long comment was added to the page to prevent it being listed on Special Shortpages. It and the accompanying monitoring template were generated via Template Longcomment. Please do not remove the monitor template without removing the comment as well. ... more details
expand further date February 2012 unreferenced date February 2012 orphan date June 2010 About the locksmith technique other uses Break disambiguation Break the brakes Brake In locksmithing , a break in the pin s is a separation in one or more sections of the pin used to code encode the lock for a specific Key lock key or set of keys in a Key lock Master key master keying system. Category Locksmithing ... more details
File On off keying eye diagram.svg thumb 300px right Eye diagram showing an example of two power levels in an On off keying OOK modulation scheme which can be used to calculate extinction ratio. P sub 1 sub and P sub 0 sub are represented by binary 1 and binary 0 respectively. In telecommunication s, extinction ratio r sub e sub is the ratio of two optical Power physics power levels, of a digital signal generated by an optical source , e.g., a laser diode , where P sub 1 sub is the optical power level generated when the light source is on, and P sub 0 sub is the power level generated when the light source is off. The extinction ratio may be expressed as a fraction, in decibel dB , or as a percentage . ref cite web url http www.timbercon.com Extinction Ratio.html title Extinction Ratio publisher timbercon accessdate 2009 05 14 ref math r e frac P 1 P 0 math References references FS1037C MIL STD 2196 Category Telecommunications terms Category Ratios electronics stub de Extinktionsverh ltnis ... more details
Angle modulation is a class of analog signal analog modulation . These techniques are based on altering the angle or phase waves phase of a sinusoidal carrier wave to Transmission telecommunications transmit data, as opposed to varying the amplitude , such as in Amplitude modulation AM transmission. Angle Modulation is modulation in which the angle of a sine wave carrier is varied by a modulating wave. Frequency Modulation FM and Phase Modulation PM are two types of angle modulation. In frequency modulation the modulating signal causes the carrier frequency to vary. These variations are controlled by both the frequency and the amplitude of the modulating wave. In phase modulation the phase of the carrier is controlled by the modulating waveform. The two main types of angle modulation are Frequency modulation FM , with its digital correspondence frequency shift keying FSK . Phase modulation PM , with its digital correspondence phase shift keying PSK . See also Modulation Polar modulation External links http www.vk1od.net FM FM.htm Discussion of practical implementation of FM PM systems telecom stub Category Radio modulation modes de Winkelmodulation ru su Modulasi sudut ... more details
MSK may refer to the following Makkal Sakthi Katchi , a political party Memorial Sloan Kettering Cancer Center Minimum shift keying or similar Gaussian minimum shift keying , a type of radio modulation Medvedev Sponheuer Karnik scale Medvedev Sponheuer Karnik seismic intensity scale MSK Musculoskeletal system Musculoskeletal Museum of Fine Arts, Ghent Museum voor Schone Kunsten Museum of Fine Arts , Ghent, Belgium Mohammad Sidique Khan one of the men responsible for the 7 July 2005 London bombings Marske railway station , England National Rail station code MSK Master Session Key, used in the Extensible Authentication Protocol EAP MySims Kingdom , a video game for the Wii and Nintendo DS Moscow Time Moscow Standard Time Zone UTC 4 disambig cs MSK de MSK eo MSK fa MSK fr MSK homonymie it MSK ja MSK fi MSK sv MSK ... more details
Orphan date March 2009 Charles Alfred Kellett born circa 1820 in Plymouth , Devon shire ref Birth Certificate for Sydney S. Kellett, Reg. No. 1857 009581, New South Wales Registrar of Births, Deaths and Marriages. Certified copy in possession of author. ref was a United Kingdom British Master Mariner famous for having sailed the Chinese Junk Keying from China , around the Cape of Good Hope to the United States and England between 1846 and 1848. Notes reflist After this adventure, Kellet reportedly migrated to India. See also Junk Keying Persondata Metadata see Wikipedia Persondata . NAME Kellet, Charles Alfred ALTERNATIVE NAMES SHORT DESCRIPTION DATE OF BIRTH 1820 PLACE OF BIRTH DATE OF DEATH PLACE OF DEATH DEFAULTSORT Kellet, Charles Alfred Category British sailors Category Nautical captains Category 1820 births Category Year of death missing UK bio stub ... more details
High Frequency Internet Protocol acronyms HFIP or HF IP. Usually associated with Automatic Link Establishment and HF radio data communications. HFIP provides protocol layers enabling internet file transfer, chat, web, or email. HFIP commonly uses ionosphere propagation of radio waves to form a wide area network that can span thousands of kilometers. HF transceivers in HFIP service typically run 20 to 150 Watts for portable or mobile units, up to approximately 2000 Watts transmitter output for high power base stations with HFIP servers. STANAG 5066 is a common HFIP standard. An amateur radio HFIP network called HFLINK ref cite web url http hflink.com title HFLINK accessdate 21 Sep 2010 ref uses Automatic Link Establishment for initiating data communications, with ARQ 8FSK frequency shift keying and PSK phase shift keying signals. References reflist Category Internet protocols internet stub ... more details
PICMG 2.10 is a specification by PICMG that defines the use of the keying mechanisms defined in IEC 1076 4 101 for the J4 P4 connector and in IEEE 1101.10 for handle and cardguide hardware. Backplanes can be designed for 3.3V VIO or 5V VIO operation. These are differentiated by having Cadmium Yellow colored keys for 3.3V or Brilliant Blue color for 5V operation. If the cPCI card operates on a particular VIO voltage the card shall have the respective colored coding key. If the card is compatible with both voltages then it may not have any coding key. Other coding keys exists for use of backplanes and cards that support PICMG 2.5. ref cite web title Keying of CompactPCI Boards and Backplanes publisher PICMG url http www.picmg.org v2internal specifications.htm accessdate 2000 02 02 ref Status Adopted 10 1 1999 Current Revision 1.0 References reflist Category Open standards Category PICMG standards ... more details
to reach an Individual International operator in the country C&F 13, Code 13 the Keying Prefix KP1 where the following digits do not contain a country code Terminal working D&F 14, Code 14 the Keying ... 15 the Keying Finish KF or End of keying code instructing the register not to wait for any more digits ... path as the links tended often to be satellite channels. The first digit was a keying Prefix a KP to indicate Terminal or Transit working and the last digit was the digit 15 or Keying Finish ... more details
when using Keying options keying option 2, and provides backward compatibility with DES with keying option 3. Keying options The standards define three keying options Keying option 1 All three keys are independent. Keying option 2 K sub 1 sub and K sub 2 sub are independent, and K sub 3 sub K sub 1 sub . Keying option 3 All three keys are identical, i.e. K sub 1 sub K sub 2 sub K sub 3 sub . Keying option 1 is the strongest, with 3 56 168 independent key bits. Keying option 2 provides ..., e.g. with K sub 1 sub and K sub 2 sub , because it protects against meet in the middle attack s. Keying ... by ISO IEC 18033 3. Other terms used to refer to the keying options Keying option n is the term used ... terms are used in other standards and related recommendations, and general usage. For keying option ... For keying option 2 2TDEA, in NIST SP 800 57 ref name NIST SP 800 57 and SP 800 78 3 ref name NIST ..., Triple DES with three independent keys Keying options keying option 1 has a key length of 168 bits ... is only 112 bits. Keying option 2 reduces the key size to 112 bits. However, this option is susceptible ... to have only 80 bits of security. ref name NIST SP 800 57 The best attack known on keying option ... and NIST considers keying option 1 to be appropriate through 2030. ref name NIST SP 800 57 If the attacker ... more details
Other uses Flex disambiguation Unreferenced date June 2008 FLEX is a communications protocol developed by Motorola and used in many pager s. FLEX provides one way communication only from the provider to the pager device , but a related protocol called ReFLEX provides two way messaging. Transmission telecommunications Transmission of message data occurs in one of four modes 1600 2, 3200 2, 3200 4, or 6400 4. All modes use Frequency shift keying FSK modulation . At 1600 2 this is on a 2 level Frequency shift keying FSK signal transmitted at 1600 bits per second. At 3200 2, this is a 2 level Frequency shift keying FSK signal transmitted at 3200 bits per second. At 3200 4, this is a 4 level Frequency shift keying FSK signal transmitted at 1600 symbols per second. Each 4 level symbol represents two bits for a bit rate of 3200 bits per second. At 6400 4, this is a 4 level Frequency shift keying FSK signal transmitted at 3200 symbols per second or 6400 bits per second. Data is transmitted in a set of 128 frames that takes 4 minutes to complete. Each frame contains a sync followed by 10 data blocks. The data blocks contain 256, 512 or 1024 bit s for 1600, 3200 or 6400 bits per second respectively. A BCH code BCH type Error correcting code ECC is used to improve the integrity of the data. The standard has been designed to allow the pager s receiver to be turned off for a high percentage of the time and therefore save on Battery electricity battery usage. Security Since data transmission over FLEX is unencrypted and insecure, transmitting private information over it should be done with caution. There have been reported instances of individuals actively listening to pager traffic private investigators, news organizations, etc. . In The Netherlands the emergency services use the Flex protocol in the nationwide P2000 network P2000 network for pagers. The traffic on this network can be monitored via several websites. In South Australia the State s SAGRN network for the Emergency ... more details
Ultra s vector keying, but made easier to use. VideoMerge allowed keying effects to be performed in the editing ... Pro . It is a powerful but simplified keying solution compared to Adobe s flagship and more ... more details
In telecommunication , a ternary signal is a Signalling telecommunication signal that can assume, at any given instant, one of three states or significant condition s, such as Power physics power level, phase waves phase position, pulse duration , or frequency . Examples of ternary signals are a a pulse that can have a positive, zero, or negative voltage value at any given instant pulse amplitude modulation PAM 3 , b a sine wave that can assume phases of 0 , 120 , or 240 relative to a clock pulse 3 phase shift keying PSK , and c a carrier wave that can assume any one of three different frequencies depending on three different modulation signal significant conditions 3 frequency modulation FM . Modulation techniques Some examples of PAM 3 line code s that use ternary signals are hybrid ternary code bipolar encoding MLT 3 encoding used in Fast Ethernet 100BASE TX 100BASE TX Ethernet B3ZS 4B3T used in some ISDN basic rate interface 8B6T used in Fast Ethernet 100BASE T4 100BASE T4 Ethernet return to zero DQPSK SOQPSK SOQPSK TG uses ternary continuous phase modulation https dspace.byu.edu handle 1877 58 3 PSK can be seen as falling between binary phase shift keying BPSK which uses two phases, and quadrature phase shift keying QPSK which uses four phases. References FS1037C See also balanced ternary digital signal Fast Ethernet 100BASE T2 uses PAM 5, which, like ternary, is one of the few modulation schemes that does not use a power of two number of symbols. three phase electric power , like 3 PSK, uses 3 phases at a single frequency and amplitude. DEFAULTSORT Ternary Signal Category Line codes Telecomm stub de Tern res Signal ... more details
wiktionarypar quadrature Quadrature may refer to In signal processing Quadrature amplitude modulation QAM , a modulation method of using both an in phase carrier wave and a quadrature carrier wave that is 90 out of phase with the main, or in phase, carrier Quadrature phase , oscillations that are said to be in quadrature if they are separated in phase by 90 2, or 4 Quadrature filter , the analytic signal of a real valued filter Quadrature phase shift keying QPSK , a phase shift keying of using four quadrate points on the constellation diagram, equispaced around a circle In mathematics Quadrature mathematics , drawing a square with the same area as a given plane figure squaring or computing that area Numerical integration is often called numerical quadrature or simply quadrature Gaussian quadrature , a special case of numerical integration In physics In Optical phase space, Optical phase space Quadratures quadratures are operators which represent the real and imaginary parts of the complex amplitude In astronomy Quadrature astronomy , the position of a body moon or planet such that its elongation is 90 or 270 i.e. the sun earth body angle is 90 Quadrature may also refer to In motion control, quadrature encoder is a rotary encoder or linear encoder giving both the relative position and the direction of motion of a shaft disambig ca Quadratura de Quadratur Begriffskl rung es Cuadratura fr Quadrature it Quadratura ja Quadrature ru ... more details
Unreferenced date December 2009 Wire removal is a visual effects technique used to remove wires in film s, usually as a safety precaution or to simulate flying in actor s or Scale model miniatures . Wire removal can be partly automated through various forms of keying graphics keying , or each frame film frame can be edited manually. First, the live action plates of actors or models suspended on wires are filmed in front of a bluescreen green screen . Editors can then erase the wires frame by frame, without worrying about erasing the backdrop, which will be added later. This can be accomplished automatically with a computer. If the sequence is not filmed in front of a green screen a digital editor must hand paint the lines out. This can be an arduous task. The modern technique of wire removal was pioneered by Industrial Light and Magic , when they used it in films such as Howard the Duck film Howard the Duck 1986 in film 1986 , Back to the Future Part II 1989 in film 1989 , and Hook film Hook 1991 in film 1991 . DEFAULTSORT Wire Removal Category Visual effects Filming stub ja ... more details
Unreferenced stub auto yes date December 2009 The modulation order of a digital communication scheme is determined by the number of the different symbols that can be transmitted using it. Modulation order can only be defined for digital modulation s. The simplest forms of digital modulation are of second order because they can transmit only two symbols usually denoted as 0 and 1 or as 1 and 1 . They are called binary shift keying BSK . Modulations which have an order of 4 and above usually are termed as higher order modulation s. Examples of these are quadrature phase shift keying QPSK and its generalisation as m ary quadrature amplitude modulation m QAM . Because existing computers and automation systems are based on binary logic most of the modulations have an order which is a power of two 2, 4, 8, 16, etc. In principle, however, the order of a modulation can be any integer greater than one. When the order of a digital modulation approaches infinity its properties approach those of the respective analog modulation. Thus the analogue modulations can be viewed as extreme cases of higher order digital modulations for which the order is equal to infinity. Category Telecommunication theory DEFAULTSORT Modulation Order Tech stub ... more details
FSK can have alternative meanings Federal Counterintelligence Service , Federalnaya Sluzhba Kontrrazvedki , , Federal Counterintelligence Service of Russia Frequency shift keying , an electronic communications modulation scheme Forsvarets Spesialkommando FSK , a Norwegian special forces military unit FSK band , a German band Freiwillige Selbstkontrolle der Filmwirtschaft , a German movie rating organization Fsk, pen name for Bo tjan ade , creator of Line Rider disambiguation de FSK fr FSK it FSK ja FSK no FSK pl FSK sv FSK ... more details
In telecommunication , frequency change signaling is a telegraph Signalling telecommunication signaling method in which one or more particular frequency frequencies correspond to each desired signaling condition of a telegraph code . The transition from one set of frequencies to the other may be a continuous or a discontinuous change in the frequency or phase waves phase . ref cite book title Modern Dictionary of Electronics author Rudolf F. Graf publisher Newnes year 1999 isbn 0 7506 9866 7 url http books.google.com books?id uah1PkxWeKYC&pg PA304&dq 22Frequency change signaling 22 ref See also Frequency shift keying Frequency modulation References Reflist FS1037C MS188 Category Data transmission Category Telegraphy telecomm stub ... more details
DSK is a three letter abbreviation with multiple meanings, as described below DSK Bank , a major Bulgarian bank Dominique Strauss Kahn born 1949 , French economist and politician Dvorak Simplified Keyboard , an alternative to the QWERTY keyboard layout, named after its creator, August Dvorak DSP Starter Kit , a product supplied by Texas Instruments Keying graphics Downstream key Downstream key The IATA code for Dera Ismail Khan Airport DSK Aircraft , a US aircraft manufacturer Devisenschutzkommando was a Nazi police unit during WW2 against black market, economic extorsion and Jewish expropriation in occupied Europe. D S Kulkarni , a famous builder in Pune , Maharashtra disambiguation de DSK es DSK fa DSK fr DSK it DSK nl DSK ja DSK ro DSK ... more details
PSK may refer to Revolutionary Party of Kurdistan Partiya ore a K rdistan , A Kurdish Separatist guerrilla group in Turkey Property Solutions Korea , a real estate consulting and development company in South Korea Phase shift keying , a digital modulation technique Pre shared key , a method to set encryption keys Phi Sigma Kappa , a fraternity sterreichische Postsparkasse P.S.K. , Austrian Postal Savings Bank Polysaccharide K , a natural medicine disambig ca PSK ceb PSK de PSK fr PSK ko PSK it PSK nl PSK ja PSK pl PSK pt PSK desambigua o fi Psk ... more details
PRK could refer to Phase Reversal Keying , see BPSK People s Republic of Korea , a short lived provisional government that aimed to take over control of Korea shortly after the end of World War II Photorefractive keratectomy , a laser eye surgery procedure ISO 3166 1 alpha 3 code, International Olympic Committee country code, and FIFA country code for North Korea Port Kent Amtrak station , New York, United States Amtrak station code PRK People s Republic of Kampuchea , the state that ruled Cambodia after the Vietnamese invasion that defeated the Khmer Rouge California People s Republic of Kalifornia , a pejorative term referring to California s political environment disambiguation de PRK eo PRK ko PRK it PRK lt PRK ja PRK ... more details
Unreferenced date March 2009 The Bell 202 modem was an early modem developed by Bell System . It specifies frequency shift keying audio frequency shift keying AFSK to encode and transfer data at a rate of 1200 bits per second , Duplex telecommunications Half duplex half duplex one way and at a rate of 1800 bits per second Duplex telecommunications Full duplex full duplex using phase shift keying differential phase shift keying DPSK modulation. These signalling protocols, also used in third party modems, are referred to generically as Bell 202 modulation , and any device employing it as Bell 202 compatible . Bell 202 AFSK uses a 1200 Hz tone for mark typically a binary 1 and 2200 Hz for space typically a binary 0 . In North America and perhaps elsewhere , Bell 202 AFSK modulation is used to transmit Caller ID information over Plain old telephone service POTS lines in the Public Switched Telephone Network public telephone network . It is also employed in some commercial settings. Surplus Bell 202 modems were used by amateur radio operators to construct the first packet radio stations, despite its low data signaling rate signalling speed . The modified Bell 202 AFSK modulation, AX.25 , remains the standard for amateur Very high frequency VHF operation in most areas. Notably, Automatic Packet Reporting System APRS transmissions are encoded this way on VHF. On High frequency HF , APRS uses Bell 103 modem Bell 103 modulation. The Bell 202 standard was adopted around 1980 as the communications standard for subsea oil and gas production control systems, pioneered by the then FSSL Controls, a spin out company from Ferranti. This modulation standard was retained until around 2000, when it was superseded by faster FSK and PSK modulation methods, although it is still utilised for extension of existing control systems that are already configured for this technique. The 202 standard permitted useful techniques such as multi dropping of slave modems to allow multiple nodes to be c ... more details
BSK is a three letter abbreviation that may refer to Binary shift keying, see digital modulation The British School of Kuwait Bosco Seva Kendra , India Basingstoke railway station BSK, a UK designation for Brake Standard Corridor railway coaches BSk, a kind of Semi arid climate Bailey School Kids , book series Nihongo Bokusatsu Shoujo Koubou Bokusatsu Sh jo K b , a chiptune musician from Fukuoka , Japan Bradshaw Kings the simulation dog game Black Star Kennels The Bash Street Kids , a comic strip in The Beano disambig de BSK fr BSK it BSK sv BSK ... more details
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