Technical Terms and Definitions Used with Law Enforcement Communications Equipment: (radio Antennas, Transmitters and Receivers)National Institute of Law Enforcement and Criminal Justice, 1973 - Government publications - 139 pages |
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Common terms and phrases
amplifier amplitude modulation angle modulation APCO Specs applied Attenuation audio frequency Audio Frequency Response audio output audio power output bandwidth Canadian RSS-121 capacitance capacitor carrier frequency carrier-to-noise ratio cathode characteristic circuit ANSI class B amplifier communication components conductors connected coupling decibels Demodulation desired signal device dipole antenna distortion effective electron tube equipment expressed in decibels frequency ANSI frequency band frequency deviation frequency modulation Glossary grid Hum and Noise IEEE inductive input signal interference Intermodulation major lobe maximum radiation measured microphone modulating signal modulating wave NOTE operation oscillator percentage modulation phase piezoelectric plate polarization power delivered power gain power supply pulse quency radiating element radiation intensity radio receiver radio transmitter radio-frequency range receiving radio reception rectifier reference resonant selective signalling Sideband Transmission signal ANSI SINAD specified spurious emissions Spurious Response squelch standard test conditions term tion trans transducer transmission line transmission system undesired voltage wave ANSI