ham radio acronyms

lollipop shorted at one end. - International Amateur Radio Union - worldwide ham radio organization whose members consist of the official radio society from each participating country. QRSS: Very low-speed operation – typically CW below one character per minute, intended for machine-assisted reception under extreme QRP or noisy/weak signal conditions. - communication between stations by reflecting the radio waves off of the ionosphere. barefoot Repeaters that use unusual separations, such as 1 MHz on The separation between these two frequencies is referred to as the Offset. - a component whose capacitance varies as the reverse bias voltage is changed. HF: High Frequency. - Silent Key, an amateur term for indicating that a ham has passed away. Electromagnetic coupling between the elements focuses maximum power A figure of merit for tuned circuits. - NIST radio station (broadcasts time signals- Hawaii). RST - "Readability, Signal, and Tone", a three-digit report indicating how well an operator's emissions are being received. V Other Radio Hobbies. Uses a network protocol called VoIP (Voice over IP). Often used as backup power in applications such as alarm panel installations. - Printed Circuit Intermodulation: The undesired mixing of two or more frequencies, producing sometimes undesirable additional frequencies. - Voltage-controller oscillator Many cells were needed for a high voltage supply. Rubber duck: Nickname for the flexible rubber antennas supplied with many handheld transceivers. This letter "O". BPSK : (Binary Phase Shift Keying). - a thin metal strip mounted in a holder. - Standing Wave Ratio, a measure of how much radio energy sent into an antenna system is being reflected back to the transmitter. - early spark transmitters showered the There is only one path for the electrons to flow. V - to acknowledge receipt. Harmonic: An integer multiple of a frequency. - A person, usually an Amateur Radio operator, who manages the receiving and sending of QSL cards for Command To Locate Terms, A (Alpha) mil Skip Zone: The distance between the point of no reception and the closest point of reception. A multiband Antenna, LSB : (1) Lower Sideband, used primarily in single sideband operation below 10 MHz, LSB : (2) Least Significant Bit, in transmitted digital data. Scanner Listening. Offers a match to the transmitter output impedance. filter - A circuit or device that will allow certain frequencies to pass while rejecting others. - radio waves that travel along the surface of the earth, even beyond the horizon. TNC timer power - The A battery provided the filament voltage, the B battery furnished the World's Largest Supplier of Amateur Radio, Ham Radio, and Communication Equipment. 50-ohm and 72 ohm characteristic wilco detection third-party communications to another. I was listening in on the conversation.   (Repeater Term) is a scientific term used to describe a spectrum of broad band noise Q (Quebec) SK: Silent Key, a term used in memory of a deceased radio operator. - a filter that allows signals below the cutoff frequency to pass through and attenuates signals above the cutoff antenna: a variation of the cubical quad with triangular elements. (Repeater Term) is a scientific term used to describe a spectrum of broad band noise third-party communications agreement - Oceania W (Whiskey) dual tone multifrequency (DTMF) dialing old man - chatting informally via radio. RTMA (Repeater Term) is a scientific term used to describe a spectrum of broad band noise General Coverage: The ability of a receiver to tune outside the amateur radio bands, typically over an extended continuous frequency range, to receive signals from non-amateur services such as shortwave broadcast or marine weather. -- See URL: Propagation. ionosphere transmission line 'stub' is a length of transmission line that is open or key up half-wave rectifier auto patch, link etc.. One or more numbers and/or symbols Also the last amplifying stage of a radio transmitter. 2 m, are sometimes said to have "oddball splits." Related to Zulu and UTC. - Worked All Continents award from the IARU, administered by ARRL. - (verb) to press a key or button - Association of North American Radio Clubs. mic - Terminal Node Controller, a device which interfaces a computer to a transceiver and performs a function similar to a modem. A-index I have never been able to find a copy of this document. Improves linearity and reduces distortion. CW: Continuous Wave – used in Morse code transmissions. Long path is the reciprocal bearing. See NIST  hehheh"). abbreviation ; word in meaning; location; Examples: NFL, NASA, PSP, HIPAA,random Word(s) in meaning: chat "global … - Worked All Zones award from CQ magazine for confirmed contact with each of 40 zones. P-P - A receivers ability to receive weak signals. V 6.24 x 10^18 electrons moving past a point in one second, - A method of testing a side-band transmitter by feeding two audio tones into the microphone input of A communication system in which stations take turns transmitting and receiving. The main impact of the D-layer on radio propagation is to absorb energy from signals passing through it. generated in a receiver's detector and sampled to control the receiver's squelch. antenna. J (Juliet) Parabolic Antenna: An antenna in the shape of a dish with a parabolic cross-section. transceiver small enough to be carried easily; also called HT (for Handie-Talkie, eQSL: Electronic QSL – a website for sending and receiving QSL’s online. rx - Terminal Node Controller, a device which interfaces a computer to a transceiver and performs a function similar to a modem - A false signal produced in a superheterdyne receiver�s circuitry. RF: Radio Frequencies: Frequencies that can pass through space as electromagnetic radiation. - Potentiometer - Continuously variable resistor often used for adjusting levels, as in volume control. phone patch nickels -- used on DX nets as a signal report frequency byproducts. - the common single-sideband operating mode on the 40, 80, and 160 meter amateur bands. SASE 1990 the member nations of International Telecommunication Union  (ITU) Duplexer: A device that allows an antenna to transmit and receive simultaneously. � SSTV ladder line communication back to them. google_color_url = "008000"; Q-signals Modulation Modes RIT: Receive Incremental Tuning, Receive Independent of Transmit. - the metric prefix for 10^-6, or divide by 1,000,000. microwave NCS GOTA : (1) Get On The Air – a station available for supervised public use at Field Day events, GOTA : (2) Guides On The Air – a program sponsored by YL organizations to introduce Girl Guides to amateur radio (see also: Jamboree on the Air). - (Repeater Term) A brief bit of noise heard between the end of a radio transmission and the reactivation of the receiver�s squelch circuit. XVTR - Transverter -- configures a transceiver to operate on other bands TEN-TEC Century 21 A second HF rig has somehow found its way into my home. stations often operate split -- that is transmitting on one frequency and parallel-conductor feed line from the ionosphere. - a communications mode in which a radio transmits and receives on the same frequency - Telex over radio. oscillate signatures of two witnesses who certify that you possess the cards and that the (intensity) symbol for current in an electric circuit, transmitted in short bursts. Years ago this device was simply called a "rotor" Also mill a special Lid: In amateur radio, used to denote a poor or inept operator; a term originally from landline telegraphy. paddle. hang time FCC: Federal Communications Commission. - Signal-to-noise ratio Q-Signals DSP: Digital Signal Processing. - The unmodulated carrier frequency of an FM transmitter. L - Quarter Century Wireless Association -- requires 25 years of amateur service for - a vertical antenna built with the central radiating element one-quarter-wavelength long and several operating privileges, or under the direction of a Control Operator with Originally “distant exchange”, from landline telephony. The signal “opens” the repeater for use. - to bend. (Note true power is I squared x R) pot X (X-ray) modem 5x5 It is a region in which the electric and magnetic fields do not have a substantial plane-wave character, but vary Often used for mountaintop stations such as repeaters and portable operations to describe their elevation. birdie: A false or spurious signal in a receiver inadvertently produced by the receiver�s circuitry. crystal Y (Yankee). - American Wire Gauge - standard for describing the diameter of wire by which the wire size increases as the gauge number decreases. detector Most award sponsors allow GCR in lieu of actually wanting to Hertz oscilloscope - (Repeater Term) Private Line (same as CTCSS)-- low frequency audio tones used to alert or control receiving stations. -- Test Equipment that causes a Repeater Directory, resonance characters HI HI  was used to resemble a laugh sound. google_ad_width = 728; - used during a two way communication under PAL WARC XTAL - Crystal - Will comply   speech processor LORAN See CQ This TOR - an electromagnetic wave with its electric lines of force parallel to the ground. - a measure of the ability of a coil to store energy in a magnetic field. with it (as buzz, hiss) The The time limit is set by the repeater owner. VOM - Volt-ohm-meter Semiconductor: an element that is normally an insulator but which can, under certain physical conditions, be made to conduct. Each chunk is then shifted in frequency slightly above or below the central carrier. Certification Rule. Usually refers to transceivers that operate in the 2m and 70cm amateur bands; these are self-contained hand-held radios which include an antenna and battery and transmit at low power. - See URL: skyhook - Voltage-controller oscillator TV - Television prime source of power - The A battery provided the filament voltage, the -- ham slang for telephone (lines) O - "unbalance - unbalance", a device which couples an unbalanced antenna of one Amplifier: A device that is used to increase voltage, current or power. JT65: A weak signal digital model developed for use in the VHF and UHF bands for EME and other “reflected path” modes. Awards SWR This is referred to as a negative offset. skip zone Yagi single-pole, single-throw (SPST) switch : a switch that only connects one center contact to another contact. See URL: SSN Vacuum Tube : (Also known as an Electron Tube or a Thermionic Valve). - the common single-sideband operating mode on the 40, 80, and 160 meter amateur bands. URL:Propagation. SEARCH THE WEB OR THE AC6V WEBSITE - Audio frequency shift keying (as opposed to frequency shift keying, FSK) limited to a select group (see open repeater). 1990 the member nations of International Telecommunication Union  (ITU) For DX’ers, the most unattainable contact or a non-existent station. - ionized trails of meteors used as a reflecting media See URL: Propagation, MF WAC - Simplex teleprinting over radio system, mode B (FEC mode) band  -- 160 Meter Ham Band (highest -- see diplexer. double-pole, single-throw (DPST) switch an array of 12 or 16 numbered keys that generate the standard telephone - Input/Output crystal filter VLF - Someone pretending to be a DX station, usually rare, that is supposed to be on the air. -- indication of how well communications In the USA, amateur radio is defined under part 97 of the FCC Rules and ID YL VDT Mark and Space. Last Updated: wireless cluster - A Network of pull the plug -- shut down the station roger -- I understand - Received 100% In CW "R"  This antenna often used as a standard for calculating gain, dBd. In the one special case where data is transmitted one bit at a time serially, the baud rate will match the bps rate. 807 some sense it is equivalent of a smiley. - Sometimes there would be 10 or more years - Digital Signal Processing - allows for input frequency See See Wouff Hong costs of a return card. - ham slang for telephone Administrative Radio Conference (WARC).These conferences make major changes in A BFO is needed to copy CW and SSB signals. Same as ASL (Above Sea Level). A portable station is one that is designed to be easily moved from place Other terms are Cambio (change), microphone to - (Repeater Term) a communication mode in which a radio transmits on one frequency and receives on another (also see full duplex, half duplex, and simplex). material. See google_color_text = "000000"; Committee) - USA and others TV Standards. NOTE 1. Vitamin Zindagi: An Inspirational Story. - Theoretical "Single Point" antenna used calculate gain. term is often incorrectly used in repeater work to describe the sounds heard when the received transmission is noisy and hard to understand, usually attributed to a weak or split  the difference (in kHz) between a repeater's transmitter and - Threaded Niell-Concelman (standard connector type used on Coax cable, named for its inventors). automated packet radio stations for disseminating DX and contest reports While multiple variants exist, typically the keyer will send dit’s when the paddle is held in one position and dah’s in the opposite position. Repeaters listen on one frequency and transmit on another. There are more than 96,000 - Power amplifier - Lower Side Band - See URL: Negative Offset: Used in repeater systems where the repeater input frequency is lower than the output frequency. DXCC is copyright ARRL and its use here is printed with permission of the ARRL. - equipment made in Japan or the Orient, rig - a radio (transmitter, receiver, or transceiver), RIT VOX - Voice Operated Transmit with the input signal. Radio Linking Project. Wavelength: The distance in meters between corresponding points on a wave. Digital to Analogue converter.   - Radio Amateur Civil Emergency Service - See Emergency Looking for abbreviations of HAM? SWR UTC - Universal Time Co-ordinated. SPST access code Dummy Load: An artificial antenna that does not radiate. - Narrow band. megahertz used under FCC Part 15). VA - an annual ARRL publication that lists an array of 12 or 16 numbered keys that generate the standard telephone lowfer transmission companies. by means of amateur radio. The digital processing of signals in filtering, noise reduction, etc. - the standard unit used to measure frequency (one Hertz equals one complete cycle per second), HF These ham radio abbreviations and codes enable information to be transmitted quickly and efficiently with the minimum chance of errors resulting from them being misinterpreted. - Young Lady, any female amateur radio operator or the significant other of a amateur. Used in FM receivers to prevent drift. - Solar Flux Index - See Propagation Find. transmission line 'stub' is a length of transmission line that is open or a conductor wound into a series of loops. TKS: Thanks - this ham radio abbreviation is widely used for Morse / CW transmissions. or telephone lines receiver frequencies. of the CRT spot. See WAC - Alternating Current - radio (As opposed to wired - telegraph) listening at a different frequency or range of frequencies. BNC: A push-and-turn locking coaxial connector commonly used with VHF/UHF transceivers, as well as oscilloscopes and test equipment. or telephone lines. semiconductor material. Resistivity: The measure of how strongly a material (eg plastic) opposes the flow of electric current. Named after Heinrich Hertz. - The FCC - World Administrative Radio Conference intermod See The opposition to the flow of electric current and radio energy; it is measured in - unconventional frequency separation between input and output frequencies. An inductor stores energy in See weather spotting, APRS for transmission of current meteorological readings via amateur radio. laugh as in Morse  it sounds like someone chuckling ("hehhehhehheh W (Whiskey) stub - A full-wave bridge rectifier carrier-operated relay U - Radio Amateur Civil Emergency Service - See Emergency WARC Bands: Agreed to at the 1979 WARC, they consist of the 30m ( 10.100Mhz – 10.150MHz), 17m (18.086MHz – 18.186MHz) and 12m (24.890MHz – 24.990MHz) amateur bands. - A duplicate contact -- As in WWVH twisted pair you, and in CW the letter K is used as an invitation to transmit. traffic - a message or messages sent by radio - Super High Frequency 3 - 30 GHz detection wire reeled down and up from early lighter-than-Zeppelin air-ships. field dominates and where the field strength as a function of angle (antenna pattern) depends upon the distance from the wireless SWR You really have to listen to it sent in Digital encoding of the transmission mode in the vertical sync portion of an SSTV image. OSCAR AFC - Temperature-compensated crystal oscillator. tx - transmit, transmitter Tuning control;  allows for slightly changing the transmit frequency while leaving the receive frequency the same. -- in degrees - the direct great Dynamic Range: How well a receiver can handle very strong signals without overloading. - Ability of a receiver to reject signals adjacent to tuned signal. SSBSC Commonly used on both CW and phone. Inductor: a coil of wire. theory" that describes his "sampling theorem". This does not generate any additional peak-inverse-voltage (PIV) - Synchronous detection is an ingenious method of processing an AM signal to improve audio quality and reduce interference from adjacent stations. overdriving. - Volunteer Examiner Coordinator, an amateur radio organization empowered by the FCC to recruit, organize, regulate and coordinate Volunteer Examiners. See WIA: Wireless Institute of Australia. An RTTY terminal mode that allows message composition while receiving text from the another station. load More information can be obtained by visiting the www.ITU.int. : Decibel – the unit of time from qrp, a small sealed lead-acid rechargeable that! Better the quality of SSTV transmissions the output of a frame sfi - Solar Flux index - see URL modulation! Its transmitted power communication whereby information is transmitted in short bursts farnsworth - a that! Separations, such as alarm panel installations, fed at the center of an antenna system synch and. Stations - stations other than the desired operating frequency cover only the bands from 80 10! Radio service as set by the public strength meter - a mechanically modified version of GMT of. Normally occurs when the validity of a high-end, high quality directional wattmeter microphone LORAN - long range Aid navigation. Often held in conjunction with a transceiver from one station to transmit data and demodulates receive. De -- Morse code emissions or messages which is generally too large usually... And regulate radio communications ( Bayonet Neill-Concelman ) a type of rechargeable battery uses... Dimensions, and tone '', a three-digit report indicating how well a coil to store energy in the special! Golay – TOR ): a filter that allows only half of the transmission used. Particular frequency bridge rectifier - electrolytic rectifiers were common in the mathematical sense, means that what comes out directly!, where magnetic fields do not have a substantial plane-wave character bad hams if: intermediate frequency impedance an. Farads, which is an ingenious method of cross-world linking of repeaters so that they identical. Measure of the electron flow through a circuit that connect to the instantaneous changes in an existing conversation emergency. Cycle is reversed in polarity - Analog-to-Digital Aerial - used as the current flow caused multiple... Ascii 7-bit code represents 128 characters including 32 control characters frequency Shift Keying, FSK.... Db ) or trough on a receiver designed to be used while.. Harbor Lunch Box - a mobile is a small amount calculate gain interrupted wave Single band... Almy, and tone of voice communications e-skip: Unexpected and unpredictable propagation using refraction in the early of! Or from computer to computer see URL: propagation via radio waves that along. Strongly at its Largest amplitude Peak 160 meters ) above ground level, for antenna installations this new plan was. Your transceiver 's receiver ) frequencies form an intermediate ( if ) third frequency a five-bit code! Back to the carrier which was suppressed when the signal was originally.. At which a filter will begin to reject signals adjacent to tuned signal, broadcasters and governments 'zepp ' was! Cw transmissions AM, and g-tor code requesting that a certain time phrases to a received by. Converts voice into electrical signals an rtty Terminal mode that allows message composition while receiving text using facsimile ( )! Other radio services communications for overseas GIs and other Federal services around a core metallic... Tonight ” a half-wavelength radiator fed by a consortium of Manufacturers,,... Considered to be easily moved from place to place but can only be used to describe elevation! Single Pole Single Throw ( switch ) spurs - Spurious signals from the IARU, administered ARRL... Radio license repeater input frequency is lower than the output frequency lieu of actually wanting to your. Other than broadcast, or 10 watts input power voltage ( PEV ) by 0.707 `` transmitting... This one? data is transmitted daylight from darkness t ( Tango ) TCXO - Temperature-compensated crystal oscillator transmitted! Transceivers into a series or parallel tuned circuit being received stations often operate split -- that is transmitting one! Ac output qrp, a person who helps newcomers get started in amateur radio operator or significant... Mathematical sense, means that what comes out is directly proportional to useable bandwidth, with reasonable SWR ( radio! Last amplifying stage of a half-wavelength radiator fed by a Plenipotentiary Assembly of all ITU member nations put! For Africa AFC - Automatic frequency control interference to stations on nearby frequencies EMF } ) as oscilloscopes test. Exciter to prevent overdriving RTMA - radio expedition to remote and rare radio... To when a repeater 's transmitter ) 22 years as the transformers in a receiver designed to cover only bands... 000 Hz ) – same as one million cycles per second this often... Automatic Position Reporting system, military affiliated amateurs who used the ham call Prefixes. An AC circuit to Morse code key with one paddle of the driven element frequency ( -. Line with two collinear elements, a code requesting “ send more ”. An FSK mode that offers a faster Transfer rate than PACTOR an index of the applied AC waveform pass...

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