Entities include frequency modulation (FM) radio, cellular networks, television, military and satellite communications. When it comes to things like Q Codes and abbreviations, much of this In addition, other appliances outside of communications, including microwave ovens and garage door openers, operate at radio frequencies. APA All Acronyms. This is because the, When conducted by an ordinary electric cable, RF current has a tendency to reflect from discontinuities in the cable, such as connectors, and travel back down the cable toward the source, causing a condition called, This page was last edited on 2 May 2023, at 13:29. Different sources specify different upper and lower bounds for the frequency range. Formerly known as The National Bureau of StandardsNODE A remotely controlled TNC/digipeater used as a connect point in packet radioNPN A type of transistor that has a layer of P-type semiconductor material sandwiched between layers of N-type semiconductor material, OFDM Orthogonal Frequency Division Multiplexing. A/D Analog-to-Digitalantenna tuner Impedance-matching device that matches the antenna system input impedance to the transmitter, receiver, or transceiver output impedance.AM Amplitude Modulation See URL: Modulation ModesAMSAT Radio Amateur Satellite CorporationAMTOR Amateur Teleprinter Over Radio, a version of RTTYantenna a device that intercepts or radiates radio frequency energyantenna tuner device that matches the antenna impedance to the receiver or transceiver output impedanceAPRS Automatic Packet Position Reporting System See URL: APRSARA Amateur Radio AssociationARC Amateur Radio Club. 3. The meaning of RADIO FREQUENCY is any of the electromagnetic wave frequencies that lie in the range extending from below 3 kilohertz to about 300 gigahertz and that include the frequencies used for communications signals (as for radio and television broadcasting and cell-phone and satellite transmissions) or radar signals. L. . Whether it is developing e-commerce platforms to make it easier to work with us or creating a new product introduction (NPI) process that helps our customers get to market faster, we must focus on building the new. 4. Used at the end of any transmission when only the Final note: the right way to express a figure and a unit puts a space between them, eg length of eight and a half metres should be written as 8.5 m. However, RadComdoes not include a space, partly for typesetting reasons, so we would print it as 8.5m. There are several actions that could trigger this block including submitting a certain word or phrase, a SQL command or malformed data. The name (or call sign) of my station is . Will you listen to (call sign(s) on kHz (or MHz))? What is the readability of my signals (or those of )? Common modulation type used in HSMM work. Acronym Meaning; RF: Radio Frequency: Hz: Hertz - unit defined by cycles per second: kHz: Kilohertz: MHz: Megahertz: SW: Shortwave: HF: High Frequency: VHF: Very High Frequency: UHF: . Repeat the last telegram (message) which you sent me (or telegram(s) (message(s)) numbers(s) ). For the radiation, see, Institute of Electrical and Electronics Engineers, "RF Radio Frequency Signal Generator Electronics Notes", Analog, RF and EMC Considerations in Printed Wiring Board (PWB) Design, Definition of frequency bands (VLF, ELF etc.) Long path is the reciprocal bearingsignal a radio emissionsilent key a deceased amateur operatorsimplex a communications mode in which a radio transmits and receives on the same frequencySITOR-A Simplex teleprinting over radio system, mode ASITOR-B Simplex teleprinting over radio system, mode B (FEC mode)SK Silent Key, an amateur term for indicating that a ham has passed away. We welcome any suggested amateur radio-related additions to this list: if you would like to contribute new entries (or corrections), please email [email protected] with the subject line Acronyms and if possible format your additions as acronym expansion. The Web's largest and most authoritative acronyms and abbreviations resource. Shall I cancel telegram (message) No. 5G networks will, therefore, provide more capacity and will serve as a channel for internet service providers (ISPs) that can compete with wired internet services. How to use radio frequency in a sentence. Medical applications of radio frequency (RF) energy, in the form of electromagnetic waves (radio waves) or electrical currents, have existed for over 125 years,[10] and now include diathermy, hyperthermy treatment of cancer, electrosurgery scalpels used to cut and cauterize in operations, and radiofrequency ablation. C Whilst many of the subjects, for example ARDF, are covered on the RSGB website I have elected to use Wikipedia as the primary reference source, at least for the initial run-through. journey into Ham Radio a little more enjoyable, we are going to go over some of RAJAR. Consider Green Globes and LEED certifications when building green data centers. Learn the differences in how the assessments are Data center migrations can be a complex process. I can hear you between my signals (while transmitting); break in on my transmission. Crossword Clue FAQ What is KHZ? Shall I repeat the last telegram (message) which I sent you, (what do you have [to offer]), Wi-Fi type of wireless networking, WIA Wireless Institute of Australia, WLAN wireless local area network, WRC World Radiocommunication Conference, WRPSA World Radio Propagation Study Association, W&S Waters and Stanton (retailer), WSPR Weak Signal Propagation Reporter, WWV US Government standard frequency and time station on 2.5, 5, 10, 15, 20 and 25MHz, X (electrical)impedance(also, Z), XIT transmit incremental tuning, XTLA eXtended three-letter acronym (or abbreviation) (ie four letters), yd yard (3 feet, or about 0.914m), YMMV your mileage may vary (ie, the results you get may be different from the results given as an example), Z (electrical) impedance (also, X), ZHR zenithal hourly rate (of meteors), GB2RS Local News and RadCom Club Calendar conventions, Club net Members of a club having a turns-based conversation under a Net Controller, Club night General, un-themed meeting at normal club meeting-place, On the air Club members operating the club radio equipment, normally on club premises unless specified otherwise, Open net Open to all turns-based conversation under a Net Controller, Radio night Club members operating the club radio equipment, normally on club premises. Repeat the last telegram (message) which you sent me (or Shall I send a series of "V" on this frequency (or on kHz (or MHz))? 4 -Fair signals. CL is sent after the final transmission, to indicate any station is invited to transmit. Have you received the distress signal sent by (call sign Please send or reply on this frequency (or on kHz (or MHz)). Over the past 70 years, the electronics manufacturing industry has changed dramatically as the industry continues to adapt to evolving demands and technology. 5G can operate on low frequencies (below 6 GHz), as well as HF ranges, commonly known as millimeter waves, or MM waves (higher than 6 GHz). Below you will find a list of terms commonly used in radio frequency (RF) product manufacturing. You can email the site owner to let them know you were blocked. We know were wrong but at least we are consistently wrong. Abbreviation ITU band number Frequency and wavelength Example uses Extremely low frequency: ELF: 1: 3-30 Hz 100,000-10,000 km: Communication . Abbreviation Full Name . received from you (or from (call sign)) is . When it comes to using the Phonetic alphabet, the reason isnt Preppers and Ham Radio Operators Not so Crazy in the Age of the Coronavirus. A radio small enough to be held in your hand. really to make things quicker, but instead to make sure both stations The boundary between radio waves and infrared waves is defined at different frequencies in different scientific fields. The strength of your signals (or those of ) is (1 to Some of these antennas will provide higher speeds, while others will cover longer distances. Also known as a ClarifierRMS Root mean squareroger I understand Received 100% In CW: Rrotor (see rotator)rotator a device attached to an antenna mast which rotates itRover A station that operates from several grid squares or counties during a contestRST Readability, Signal, and Tone, a three-digit report indicating how well an operators emissions are being receivedRTTY radio teletype A form of digital communications, SASE Self-addressed, stamped envelopeselectivity Ability of a receiver to reject signals adjacent to tuned signalsensitivity A receivers ability to receive weak signalsseparation or split the difference (in kHz) between a repeaters transmitter and receiver frequenciesseries circuit an electrical circuit in which all the electrons must flow through every part of the circuitshack Ham station operating areaSHF Super High Frequency 3 30 GHzshort path in degrees the direct great signal bearing path between two locations. half duplex mode in which a radio transmits and receives on two different frequencies but performs only one of these operations at any given timehalf-wave dipole basic wavelength antenna consisting of a length of wire or tubing, open and fed at the centerhand-held portable transceiver small enough to be carried easilyhamfest event at which hams meet to buy, sell, and swap equipmentHertz the standard unit used to measure frequency (one Hertz equals one complete cycle per second)HF High Frequency 3 MHz to 30 MHzhi hi ha ha (laughter) the Morse equivalent of a laughhigh-pass filter a filter designed to pass high frequency signals, while blocking lower frequency signalsHiram Percy Maxim AKA The Old Man 1AW, ARRL founder. For example PA can mean 'Public Affairs' or 'Personal Assistant' or, in the case of radio communications, 'Power Amplifier'. The nominal characteristic impedance (often 50 ). been sent? mobile station) at hours. The super high frequency (SHF) and extremely high frequency (EHF) bands are often referred to as the microwave spectrum. Your exact frequency (or that of ) is kHz (or MHz). For example, a voice signal is added to the RF carrier to produce a phone emission signal. I can communicate with direct (or by relay through ). Basic Service Set (BSS): One access point connected to a distribution system. Unlicensed frequencies are free for public use but remain a shared medium. has a purpose and its not to hide anything from the outside world. Through the handover process, the mobile device remains aware of signal quality and the nearest antenna with the least congestion. More detailed band designations are given by the standard IEEE letter- band frequency designations[6] and the EU/NATO frequency designations.[9]. OSCAR: Orbiting Satellite Carrying Amateur Radio. RF and medicine RF ranges: How is RF measured? radio frequency RF volt V radio-frequency interference RFI voltage controlled oscillator VCO resistance-capacitance RC voltage standing-wave ratio VSWR Radio frequency (RF) is the oscillation rate of an alternating electric current or voltage or of a magnetic, electric or electromagnetic field or mechanical system in the frequency[1] range from around 20kHz to around 300GHz. A capacitor stores energy in an electric fieldcarrier a pure continuous radio emission at a fixed frequency, without modulationCC&Rs Covenents, Conditions, and Restrictionschassis ground the common connection for all parts of a circuit that connect to the negative side of the power supplycoax A type of wire that consists of a center wire surrounded by insulation and a grounded shieldcode usually refers to Morse code, but used for others such as baudotcoil a conductor wound into a series of loopscolor code Colored stripes painted on the body of resistors and other components to show valuecondenser old term for capacitor composed of two or more conductive plates separated by an insulating material to store energy in an electric fieldcontrol operator the Amateur Radio operator designated to control the operation of the repeater, as required by FCC regulationscore the material used in the center of an inductor coil, where magnetic fields is concentratedCQ calling any amateur radio station, may be sent in CW, phone or some digital modesCSCE Certificate of Successful Completion of Examination (U.S.) issued when amateur radio license examinations passedCTCSS abbreviation for continuous tone-controlled squelch systemcurrent a flow of electrons in an electrical circuitCW Continuous Wave, an unmodulated, uninterrupted RF wave used with Morse code, dB Decibel (1/10 of a Bel); unit for the ratio of two power measurementsde Morse code for from e.g., AC6V de WA0PPPdiplexer A frequency splitting and isolation device to couple two transceivers to a single or dual band antennadipole the basic wavelength antenna consisting of a length of wire or tubing, open and fed at the centerdownlink Channel used for satellite-to-earth communicationsDPSK Differential Phase Shift Keying, a form of BPSKDSP Digital Signal Processing allows for filtering, noise reduction, audio equalization, etc.DTMF abbreviation for dual-tone multi-frequency, the series of tones generated from a keypaddual-band antenna antenna designed for use on two different Amateur Radio bandsdummy load a device which substitutes for an antenna during testsduplex mode in which a radio transmits on one frequency and receives on anotherduplexer device which allows a single antenna to transmit and receive simultaneouslyDVM Digital voltmeterDX a distant station or to contact a distant stationDXCC award for contacting and confirming 100 or more different countriesdynamic range How well a receiver can handle strong signals with overloading; any measure of over 100 decibels is considered excellent, earth ground a circuit connection to a ground rod driven into the earthelmer a mentor; an experienced operator who tutors newer operatorseleven meters currently the CB band, once a Ham bandEME Earth-Moon-Earth; using the moon as a reflector for a signal path; moonbounceEMF Electromotive force; voltageEMI Electromagnetic interferenceemission mode the form of a radio emission, such as AM, FM, or single sidebandERP Effective Radiated Powerether Old theory for the medium once believed to conduct radio wavesEu EuropeFCC Federal Communications Commission, US governmental body that regulates the radio spectrumfeedline wire or cable connecting a radio to an antennaFET Field-effect transistorfield day Amateur Radio activity in June to practice emergency communicationsfield strength meter a test instrument used to show the presence and strength of RF energyfilter A circuit or device that will allow certain frequencies to pass while rejecting othersfinal The last transmission by a station during a contact. 2023 Copyright Epec, LLC. you received from me (or from (call sign))? Cordless and cellphones, radio and television broadcast stations, Wi-Fi and Bluetooth, satellite communications systems and two-way radios all operate in the RF spectrum. Radio frequencies are not visible to the human eye. SK is sent before the final This is why wireless networks use a system of frequency-division multiple access (FDMA), in which there must be at least one cell in between cells reusing the same frequency. 64 Quadrature Amplitude Modulation. Eight Phase Shift Keying. Signal Strength 1 -Faint signals, barely perceptible. [11] Magnetic resonance imaging (MRI) uses radio frequency fields to generate images of the human body. helped cut down on the amount of code that needed to be sent, and later it The following terms are commonly used in radio frequency connector applications. FM stands for frequency modulation. Find out what is the most common shorthand of Wireless Radio Frequency on Abbreviations.com! Rise Time I am busy. 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