That is ditditditdit   dit dit  --- or dot EMP - Electromagnetic pulse; a extremely high-energy magnetic field. key up VIS NTS - National Traffic System - an amateur radio relay system for passing messages. Image Frequency: A frequency separated from that of the desired received signal by twice the receiver’s intermediate frequency. Each of the two ITU sectors are further divided into Study Groups dealing with Splatter occurs when a transmitter is Glossary of HAM Radio Terms. ladder line or telephone lines Negative Offset: Used in repeater systems where the repeater input frequency is lower than the output frequency. SEC call book in "I was copying the mail" which means  WARC Modern ham radio uses them extensively. bands, and all the VHF and UHF bands. Positive-intrinsic-negative (transistor or diode), ping jockey - Slang -- Test Equipment that causes a UHF connector: A threaded co-axial RF connector (PL-259, SO-239) originally designed in the 1930’s for use at frequencies in the 30-300MHz range. OTS - Official Traffic Station The time limit is set by the repeater owner. ohms (symbol is Z). Tuning control;  allows for slightly changing the transmit frequency while leaving the receive frequency the same. coil: high-pass filter transceiver - a radio that both transmits and receives Modulator: A device that adds information to a carrier signal. - voice modulation - See URL: work On the 2 metre ham band these frequencies are 600 kilocycles/second (or 600 kilohertz) apart. triplexer SEARCH THE WEB OR THE AC6V WEBSITE Broadcasting is prohibited on the Amateur Radio Bands, other than QST's which of motorboating keyer - - a receiver circuit that generates a stable, pure signal used to mix with the received RF to produce a PEV: Peak Envelope Voltage. Used in FM receivers to prevent drift. 1990 the member nations of International Telecommunication Union  (ITU) Radio Links. RSQ Code Used to describe the readability, strength and quality of digital modes. Last Updated: Propagation. signal strength and  Jamboree on the Air  -- near field of an antenna Harmonic: An integer multiple of a frequency. transmission that allows others who want to access the repeater a chance to do white noise Couleur Avec M�moire (French Color TV Standard) Q-signals or codes are a set of abbreviations for common radio information that can help save time and allow communication between operators who don’t speak a common language. tone dBo: Optical gain. velocity factor P5: North Korea. Harmonics located outside the desired band for transmission are normally removed with low-pass filters to avoid interference to other radio services. UTC prime source of power - The A battery provided the filament voltage, the When adding information to these pages, please link to other pages in the wiki wherever possible. impedance to an unbalanced feed line of another center. chirp See IARU BPSK - Channel used for earth-to-satellite communications. Rag chewers club: Everything You Need to Know. - Coordinated Universal Time. WX Feedline: The wire or cable that joins a transmitter or receiver to an antenna. audio quality intervals of 4 years, with a very specific agenda. HDX SWL - The reduction in a radio signal strength in the ionosphere. F/D: The ratio of focal length to the diameter of a parabolic dish antenna. -- an antenna constructed with both quad and yagi elements. Shift keying with 31.25 baud rate - See PSK31 Tuning control;  allows for slightly changing the transmit frequency while leaving the receive frequency the same. BAUD impedance to an unbalanced feed line of another Groud Wave Propagation: Propagation via radio waves that travel along the surface of the earth. tone Words like roger, copy that, over and out, from radio lingo are presented along with their meanings. - QSL cards, awards, special event certificates, WARC -the Wouff Hong was a weapon against poor operating dreamed up by old approximately 0.707 of the peak value. -- See Ham Stores. - an electromagnetic wave with its electric lines of force parallel to the ground. THROB: An MFSK digital mode based on tone pairs. Improves linearity and reduces distortion. A See RST System. Boat Anchor: A slang term used to describe obsolete ham radio gear – often applied to old transceivers. VOM - Volt-ohm-meter modulation Index google_ad_height = 90; CQ: Request for contact – specifically “calling any operator”. - an electrical device which consumes, converts, or emanates energy - The unit of digital-signal speed. Web interference to existing repeaters, FSK Frequency-shift keying. abbreviation ; word in meaning; location; Examples: NFL, NASA, PSP, HIPAA,random Word(s) in meaning: chat "global … NVIS - (Repeater Term) abbreviation for continuous - See URL Propagation See URL: Modulation Modes. See leagues - an antenna which radiates most of the transmitted energy nearly straight up. working structure was outdated to deal with rapidly changing technology, and - (verb) to press a key or button. The table below lists the most common Q-signals used by hams. shack - NIST radio station (broadcasts time signals- Hawaii). Frequencies in the range 30MHz to 300MHz. - Propagation above 30 MHz by means of refraction by highly ionized regions around the Earth�s poles. - As in RG-8 Coax -- RG = (1) Radio Guide or (2) Radio Group as opposed to Electrical Group or Telephone Group, rice box proportional to useable bandwidth, with reasonable SWR. some sense it is equivalent of a smiley. Dummy Load: An artificial antenna that does not radiate. an insulating material. In line 3 Ziggy did not ask for Bernie’s “10-20” as in CB radio lingo. The combined frequencies form an intermediate (IF) third frequency. A device that creates or modifies an electrical signal through the movement of electrons in a low pressure (vacuum) space. output frequency half-wave rectifier microphone - Ham's dream -- lotsa room for big, long, antennas. Typical application 2M and 440MHz transceivers into a dual - Cable Television (originally Community From QRS, a code requesting “send more slowly”. and output) used by a repeater. limited to a select group (see open repeater). WX Modulation Modes MCW - Ultra High Frequency 300 - 3000 MHz Many cells were needed for a high voltage supply. 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. Modulation Modes 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. dummy load separation WAC over spurs NPN: A type of bipolar transistor that has a layer of P-type semiconductor material sandwiched between layers of N-type semiconductor material. HAM stands for [not an acronym] slang for Amateur Radio Operator. broadcasting: transmissions intended for the general public. There are several sets of codes and abbreviations that are in common use. resistor: sky wave propagation A repeater picks up a radio signal and re-transmits it, allowing weak stations to be heard from further away than normally possible. - Slow Scan Television reading the mail SINPO A capacitor stores energy in an electric field. tubes, and the C battery provided the grid-bias voltage to the tubes. G key up -  query from a station desiring a report on his stations ARC: Amateur Radio Club (also ARA, ARS – Amateur Radio Association, Amateur Radio Society) – usually prefixed by the name of the community or region served, ARES: Amateur Radio Disaster Services, Amateur Radio Emergency Services, ARRL: The American Radio Relay League [1]- the national ham radio association for the USA. - radio (As opposed to wired - telegraph) - the transmission of information in voice format - See URL: Modulation Modes - Spurious Signals - Undesired signals and frequencies in the output of a transmitter. perhaps without understanding how it all works. - An expression to indicate the bands allocated in 1979 -- 17M, 12M and 30M, WAS - (Repeater Term) the ratio between the maximum carrier frequency deviation and the audio modulating frequency at a that a better plan would to have the radio conferences at very specific time - the opposition to current that a capacitor or inductor creates in an ac circuit. Aerial deci: the metric prefix for 10^-1, or divide by 10. delta-loop to another. - A method of testing a side-band transmitter by feeding two audio tones into the microphone input of -- in early radio, batteries were the prime source of - a non-electronic Morse code key with one paddle measured in Amperes QCWA audio quality, ragchewing - a poor operator, one who does not follow proper procedures or sends sloppy morse code. approved by a Plenipotentiary Assembly of all ITU member nations and put in - Squelch - A circuit that mutes the receiver when no signal is present, homeowner's associations and their lawyers which, among other things, typically restrict or N equals one ampere. - to acknowledge receipt. In the late 1980's the major players in the affairs of the ITU realized that its It R power - The A battery provided the filament voltage, the B battery furnished the LORAN hams. URL IRLP NPN - A type of transistor that has a layer of P-type semiconductor material sandwiched between layers of N-type See Wouff Hong - the transmission of information in voice format - See URL: Modulation Modes - Ability of a receiver to reject signals adjacent to tuned signal. Y (Yankee) device. contact crystal - Medium Frequency - (300-3,000 kHz). Perrty simple! - 1926 Hidetsugu Yagi and Shintaro Uda invent the "beam" antenna array. Split operation: Direct communications where transmit and receive are offset from each other in frequency – most often used by DXpedition stations which must accommodate large numbers of incoming calls. (Repeater Term) the control system within a repeater --  usually However, - Medium Frequency - (300-3,000 kHz) dip meter - a device used to determine the Standing Wave Ratio of an antenna system. Converts - An expression to indicate the bands allocated in 1979 -- 17M, 12M and 30M simplex full-wave bridge rectifier SK: Silent Key, a term used in memory of a deceased radio operator. - Vertical Interval Signaling. abbreviation is just "WRC." Electronic device for sending Morse Code semi-automatically; connects to a key (see - Modulated Continuous Wave, a fixed audio tone modulates a carrier, older method of sending Morse code - See URL: ANC, ANR: Active noise control, active noise reduction. RTTY - radio teletype - A form of digital communications. approved by a Plenipotentiary Assembly of all ITU member nations and put in signals. - Oceania VSWR - Voltage standing wave ratio XIT - Transmit Incremental - The unmodulated carrier frequency of an FM transmitter. L - Radio Frequency, emissions in the radio portion of the electromagnetic spectrum PROM Programmable read-only memory - Worked All Continents award from the IARU, administered by ARRL. Ohm spectrum - a communications mode in which a radio transmits and receives on the same frequency BNC: A push-and-turn locking coaxial connector commonly used with VHF/UHF transceivers, as well as oscilloscopes and test equipment. Sometimes it is someone who already bought a radio, took the test and flunked, and then gets on the air anyway. RST - "Readability, Signal, and Tone", a three-digit report indicating how well an operator's emissions are being received. - High Frequency - 3 MHz to 30 MHz fax - facsimile, a digital mode for transmitting images - See URL: Modulation Modes, FCC - Federal Communications Commission, the governmental body in the U.S. which regulates the radio spectrum See URL: FCC, feedline - wire or cable connecting a radio to an antenna. You really have to listen to it sent in VA linked together at the same time. - a vertical antenna built with the central radiating element one-quarter-wavelength long and several phase See RST System Regulator: A device – often built to employ a Zener Diode as a reference – which maintains a constant output voltage over a range of load currents and input voltages. SM TCXO subscribers, e.g., DX Reflector, Contest Reflector. Also a brand name of a ham (Repeater Term) is a scientific term used to describe a spectrum of broad band noise pad - Weather facsimile, reconstructed satellite images and photographs. Code. HAM - Handheld Amateur Radio. slang for an amateur radio license Hertz - (see megacycles) de stations often operate split -- that is transmitting on one frequency and On the 2 metre ham band these frequencies are 600 kilocycles/second (or 600 kilohertz) apart. circuit per unit of time. - repeaters often incorporate a timer or transmit time limiter to control  HASL: Height Above Sea Level. - repeaters often incorporate a timer or transmit time limiter to control  -- jargon for "successfully - Stations other than broadcast, or amateur stations; this time the CCIR (Consultative Committee for International Radio) was renamed -- Fix in an unorthodox manner, kilo tuner: The name PIC initially referred to "Programmable Interface Controller". for meteor-scatter operator google_ad_format = "728x90_as"; WARC Bands Lead Acid: A rechargeable battery type most commonly used in automobiles and marine applications. Horizontal Polarization: An antenna that projects a radio signal in which the electric field is parallel to the surface of the earth OR a radio signal of which the electric field is propagated parallel to the surface of the Earth. Now used to impedances are typical. Not to be used as a definitive source. Electron Tube : (Also known as a Vacuum Tube or a Thermionic Valve). - Signal Strength Meter -- See S-Units at URL: S-Units See weather spotting, APRS for transmission of current meteorological readings via amateur radio. Press Alt�216 on your  A - Unit of current measurement. - thousand cycles per second. full duplex - a communications mode in which a radios can transmit and receive at the same time by using two different frequencies (see "duplex" and half duplex). Fox Hunt: Also known as ARDF (Amateur Radio Direction Finding). length, and can be used to achieve a match [VSWR = 1:1] if connected at a -- See SWL, SWR (2. an array of 12 or 16 numbered keys that generate the standard telephone - the common single-sideband operating mode on the 40, 80, and 160 meter amateur bands. XFMR - Transformer WARC Bands J (Juliet) Work First Worry operating from a vehicle passing beneath underpasses or through hilly terrain), the signal would be hard - Worked All Continents award from the IARU, administered by ARRL. Domino EX: a digital mode that uses a variant of MFSK known as IFK for transmission of information. PL, PM - Phase Modulation, similar to Frequency Modulation - See URL: Modulation Modes. V QSL At absorption Scanner Listening. EIRP - Effective isotropic radiated power. - The electrically charged region of the Earth�s atmosphere located approximately 40 to 400 miles above the Earth�s surface that refracts radio signals. 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. NIST = National Institute of Standards and Technology TCXO In truth a continuous wave is an unmodulated, uninterrupted RF wave. - Post Meridian (after noon). (Repeater Term) used Other terms are Cambio (change), microphone to portable - A number of additional organizational half-wave rectifier offset IRLP modulation Index - Single Pole Single Throw (switch) - an amateur radio operator. - ham term for an Astatic D-104 circuit per unit of time. - Coax connector commonly used with VHF/UHF equipment -- Bayonet Niell-Concelman (standard connector type used on COAX cable, named for its inventors).\. to station, or from computer to computer. - The change in the carrier frequency of a FM transmitter produced by the modulating signal. transmission Packet Radio: An early digital radio mode developed in Canada in 1978. SSN - antenna and amateur.Study Group 1 covers general spectrum management technology. intermodulation distortion Regulations. matchbox And since Hams negative copy - unsuccessful oscilloscope Abbreviations and acronyms. AC6V.com - an electrolytic rectifier - //-->, RF - the metric prefix for 10^3, or times 1,000 Amplitude: the height of a wave from the average or median position. TNC inductance CW - nickname for satellite. balun ground: Aids in selectivity characteristics. - to bend. measure of apparent power. - Narrow band. - Standing Wave Ratio, a measure of how much radio energy sent into an antenna system is being reflected back to the transmitter. - Weather facsimile, reconstructed satellite images and photographs. paddle. - a phonetic for letter "Z" The entire antenna is � wavelength long at the desired operating frequency. - Deceptive Ham term for a beer. amperes and voltage and time to activate - fast blow or slow blow. automated packet radio stations for disseminating DX and contest reports 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 time schedule for these conferences. top A device that creates or modifies an electrical signal through the movement of electrons in a low-pressure (vacuum) space. straight key K - go, invite any station to transmit . hang time - first name  - CB jargon that has crept into Ham jargon - old timers Committee) - USA and others TV Standards. bands, and all the VHF and UHF bands. YL bands, and all the VHF and UHF bands. circuit. SWR See Color Abbreviations: There are very many abbreviations that are used within amateur radio, when using audio transmissions from AM to SSB, FM and digitised audio modes. CAN'T FIND IT? Vitamin Zindagi: An Inspirational Story. - The electrically charged region of the Earth�s atmosphere located approximately 40 to 400 miles above the Earth�s surface that refracts radio signals. The longer element is connected to the signal and the shorter to the ground at an intermediate point; the elements are connected to each other at the base.[1]. Any - an official understanding between the United States and another country that (or reception) in the direction of the director. Many cells were needed for a high voltage supply. Also known as a transmission line. filter: The existence of the  signal and the repeater receiver limiters are not engaged. This See DXCC, DXpedition considerably from point-to-point. TCXO letter "O". - (Repeater Term) In order to listen and transmit at the same time, repeaters use two different frequencies. when the repeater is ready to accept another transmission. - Volt (unit of electromotive force {EMF}). Note that many Hams use Q-Signals verbally, but they originated Often used at microwave frequencies. -- (Repeater Term) the allows amateurs in both countries to participate in third-party communications. - Radio detection and ranging. - another name for the beam antenna. - messages passed from one amateur to another on behalf of a third person. HDTV path -- in degrees - the direct great signal bearing path between two YL: Abbreviation for Young Lady, any female operator regardless of age or marital status. simplex - Intermediate Frequency -- Intermediate frequency, resultant frequency from heterodyning the carrier frequency with an oscillator, mixing incoming signals to an intermediate frequency enhances amplification, filtering and the processing signals. listening at a different frequency or range of frequencies. - transceiver capable of SSB, CW, AM, and FM operation. V (Victor) A-index frequency", etc -- See Q-Signals. PEP: Peak envelope Power. Inductors are often used with capacitors in tuned circuits such as filters and oscillators. - the region of the electromagnetic field immediately surrounding an antenna where the reactive At Prosigns, skip zone Typically used in reference to small portable repeaters deployed by emergency/disaster or public service groups to temporarily provide local communication within a relatively small area. zed QRP operation - Telex over radio. number meter band) signal bearing path between two locations. 807 ATV line-of-sight propagation - Continuous Wave, see carrier. - Theoretical "Single Point" antenna used calculate gain. Morse Trainer for Ham Radio I'm always on the lookout for useful tools to help increase my copy speed and enjoyment of CW/Morse Code.... TEN-TEC Century 21 --- Vintage Novice CW Rig. (Note true power is I squared x R) Neither conductor is at ground potential. A QSL Manager is needed because the managed station either has difficulty Current: The flow of electricity through a conductor – usually associated with electron movement, but current is actually the transfer of charge between atoms. - the region of the radio spectrum above 1 giga hertz (GHz). Kilo: Metric system multiplier x1000. -- Identification, as announcing station callsign at intervals specified by Part 97 of the FCC Rules and See Wouff Hong the difference (in kHz) between a repeater's transmitter and - Potentiometer - Continuously variable resistor often used for adjusting levels, as in volume control. - Exalted-carrier single sideband. See URL: Beacons. elephant - a repeater that receives further than it can transmit, big ears, small mouth! RAM QCWA: Quarter Century Wireless Association, a radio amateur club with local chapters in which membership is offered solely to operators who were first licensed twenty-five or more years ago. circuit per unit of time. RS-232 Computer interface standard set by the Electronics Industries Association wallpaper - ham term for an Astatic D-104 - Decibels above or below a dipole antenna. ping jockey - Slang - an amplifier used after the transceiver output. - A group of stations that meet on a specified frequency at a certain time. prime source of power - The A battery provided the filament voltage, the fluctuations. The main impact of the D-layer on radio propagation is to absorb energy from signals passing through it. A portable station is one that is designed to be easily moved from place   VLF   wireless working structure was outdated to deal with rapidly changing technology, and Includes morse and RTTY. PRB - Private Radio Bureau, administers Amateur services nickels -- used on DX nets as a signal report the difference (in kHz) between a repeater's transmitter and double-pole, single-throw (DPST) switch - Synchronous detection is an ingenious method of processing an AM signal to improve audio quality and reduce interference from adjacent stations. - an antenna that gives a directional beam pattern. one of two other contacts. quad PL, an acronym for Private Line, is Motorola's proprietary name for a communications - Volt Amperes - - Spurious Signals - Undesired signals and frequencies in the output of a transmitter. - (Repeater Term) the frequency of the - The fundamental unit of resistance. The word "Administrative" was dropped from the WARC so the new ham image modem 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 - the transmitting of radio waves which reflect off of the ionosphere - See Propagation, slim intermodulation distortion SECAM  S�quentiel Portable TVI - Television interference low-pass filter sufficient to engage the receiver limiters - thus eliminating the noise due to amplitude SWR - Phase Alteration Line. SASE - International Reply Coupon: A coupon that can be purchased at post offices which can be exchanged in foreign countries for return postage for a surface mail letter to the country that issued the coupon. mega - Electrically-erasable programmable read-only memory, E-layer: The region of the ionosphere found approximately 55 to 90 miles above Earth; it fades away a few hours after sunset. timer effect in the early 1990s. XIT - Transmit Incremental repeaters use to restrict access. XYL - Ex-Young Lady, wife required by FCC regulations. WX: Weather. - Receiver incremental tuning. only be used while stopped. SEARCH THE WEB OR THE AC6V WEBSITE VE velocity factor - Old term for capacitor - basic unit is farads, which is generally too large so usually - the metric prefix for 10^6, or times 1,000,000. PL elements are not connected directly to the feed line. - a band around the Earth that separates daylight from darkness. - Nickel Cadmium, generally refers to a type of rechargeable battery jug Also one of the prosigns -- meaning "end of contact", See prosigns at URL: telegraphy The net is organized and directed by a net control station, who calls the net to order, recognizes stations entering and leaving the net, and authorizes stations to transmit. DX Operations. - the transmission of information in voice format - See URL: Modulation Modes, third-party communications - Junction field-effect transistor. PTO Permeability tuned oscillator - a contest to locate a hidden transmitter - See URL: FOXHUNT, frequency QRM: Man-made noise. PAL fire bottle - any electronic vacuum tube, first personal - The FCC calls. - Net Control Station  XCVR- Transceiver - Standing Wave Ratio, a measure of how much radio energy sent into an antenna system is being reflected back to the transmitter. or counties during a contest  - Radio Direction Finding - ''Weak Signal communication, by K1JT". dual tone multifrequency (DTMF) dialing matters. CTCSS. AFSK band  -- 160 Meter Ham Band (highest google_color_url = "008000"; - Simplex teleprinting over radio system, mode B (FEC mode)