continuous tone band

См. также в других словарях:

• Continuous Tone-Coded Squelch System — In telecommunications, Continuous Tone Coded Squelch System or CTCSS is a circuit that is used to reduce the annoyance of listening to other users on a shared two way radio communications channel. It is sometimes called tone squelch. Where more… …   Wikipedia

• Tone cluster — Example of piano tone clusters. The clusters in the upper staff C♯ D♯ F♯ G♯ are four successive black keys …   Wikipedia

• Guard tone — is a feature of wireline modems.The guard tone is sent by the answering modem after it has sent the answer tone. It is a single continuous tone with a frequency of either 1800 Hz or 550 Hz, sent at a level of 6dB or 3dB, respectively, below the… …   Wikipedia

• Shepard tone — Spectrum view of ascending Shepard tones (linear frequency scale) A Shepard tone, named after Roger Shepard, is a sound consisting of a superposition of sine waves separated by octaves. When played with the base pitch of the tone moving upward or …   Wikipedia

• Citizens' band radio — Typical 1980s CB base station, used with outdoor antenna. This radio may also be used in an automobile, since it is powered by 13.8V DC. Shown with Astatic Power D 104 desk mic …   Wikipedia

• Black Flag (band) — Refimprove|article|date=January 2007Infobox Musical artist Name = Black Flag Img capt = Black Flag performing in 1984. Left to right: Greg Ginn, Henry Rollins, and Kira Roessler. Drummer Bill Stevenson is not visible behind Rollins. Background =… …   Wikipedia

• Selective calling — SECAL redirects here. For the French wine grape also known as Secal, see Jurançon (grape). In a conventional, analog two way radio system, a standard radio has noise squelch or carrier squelch which allows a radio to receive all transmissions.… …   Wikipedia

• photography, technology of — Introduction       equipment, techniques, and processes used in the production of photographs.  The most widely used photographic process is the black and white negative–positive system (Figure 1 >). In the camera the lens projects an image of… …   Universalium

• Squelch — In telecommunications, squelch is a circuit function that acts to suppress the audio (or video) output of a receiver in the absence of a sufficiently strong desired input signal. Contents 1 Carrier squelch 2 Tone squelch and selective calling 2.1 …   Wikipedia

• GE Marc V — Listen filename=Simulated GE Mark V Call.ogg title=GE Marc V description=Hear a simulated GE Marc V call as it would sound from a mobile, (version 2). format=OggGE Marc V is a historic U.S. format or protocol of trunked, two way radio introduced… …   Wikipedia

• test — 1. To prove; to try a substance; to determine the chemical nature of a substance by means of reagents. 2. A method of examination, as to determine the presence or absence of a definite disease or of some substance in any of the fluids, tissues,… …   Medical dictionary