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The individual chargeable for all functions and proper operation of a radio station. The individual at a broadcasting station responsible for correct and legal operation of a station and maintenance of all required data. A station that all the time operates from a relentless, specified land location. The bodily location from which a radio stations features (setting frequency, turning the station off and on, etc.) are managed. When two or more packet radio stations simultaneously attempt to transmit on the same frequency. The amount of frequency space occupied by a radio sign. A receiver circuit that modify the amount of amplification given to a received signal so that the quantity from the speaker stays relatively fixed. The constant output of a radio transmitter that may be periodically interrupted to ship messages by Morse code. AMTOR: Acronym for "amateur teleprinting over radio," a mode that uses FSK to send messages containing error detection capabilities and the flexibility request retransmission of missing or corrupted data.

ANARC: Acronym for "Association of North American Radio Clubs," an association of radio listener clubs in the United States and Canada. ARRL: Acronym for "American Radio Relay League," the national association for ham radio operators in the United States. ASCII: Acronym for "American customary code for information interchange," a method of representing higher and lower letters along with numbers and special symbols. How nicely a receiver responds to weak signals, measured in microvolts (mV); the lower the variety of microvolts indicated, the extra sensitive the receiver. Similar to exalted carrier reception, however the replacement provider tuning and monitoring is finished automatically by the receiver. A tuning methodology in transmitters and receivers which makes use of a few piezoelectric crystals to generate a variety of frequencies. A frequency range put aside for overseas ham radio stations to transmit in whereas ham stations in the United States and Canada do not; American and Canadian stations call overseas stations on frequencies outdoors the window. A technique of restricting entry to a repeater station to stations that begin their transmission with a special sequence of tones. Spoken at the end of a transmission to point to the other station that it's their flip to transmit.

The frequency on which a radio transmission takes place, or the input and output frequency pair utilized by a repeater station. The lower the angle, the better distance the radio sign will travel by way of ionospheric refraction. Placing a loading coil at the center of an antenna so as to lower the antennas resonant frequency. A modulation technique during which the timing, amplitude, medium voltage overhead cable and/or spacing of pulses of a transmitters service are varied so as to convey data. PM: Abbreviation for phase modulation. PLL: abbreviation for section locked loop. CW: Abbreviation for continuous wave. The frequency at or close to the MUF at which the utmost sky wave propagation vary is obtained. A circuit that tunes a receivers sign amplifying circuitry for maximum sensitivity on a desired frequency range. A system installed between a receiver or transmitter and the antenna to match the radio impedance to the antenna impedance for maximum energy switch.

A circuit that eliminates unwanted audio frequencies from the audio output of a receiver. A modulation technique that varies the power output of a transmitter in accordance with the variations in the modulating audio sign. A modulation approach that varies the carrier frequency of a transmitter in accordance with the variations within the energy of the modulating audio sign. That is used after a frequency to indicate that it varies barely. A gaggle of stations that meet on a specified frequency at a certain time. A non-governmental group that works to voluntarily assign frequencies to customers in order to stop interference, particularly for repeater stations. A group of letters and numbers used to identify a station and the nation authorizing its operation. 1) When a station ends its operations and shuts down; 2) When a frequency can now not assist propagation to a desired station or location. QTH: Radiotelegraph abbreviation for a stations location.