by IrishRepublicanArmy February 12, 2004
by IrishRepublicanArmy December 20, 2003
international distress radio code word, when using voice transmission
SOS is the morse code version
MAYDAY is reconized internationally as an emergency code on any type of radio system, and should be taken seriously.
SOS is the morse code version
MAYDAY is reconized internationally as an emergency code on any type of radio system, and should be taken seriously.
by IrishRepublicanArmy October 28, 2003
by IrishRepublicanArmy February 14, 2004
A test instrument that shows a picture of electrical waveforms by means of a cathode ray tube. An oscilloscope is calibrated so one can measure the instantaneous values and waveforms of electrical signals that are changing rapidly or varying as a function of voltage or time. Also known as a Scope.
by IrishRepublicanArmy January 02, 2004
A burst of noise (a.k.a. "static") heard after a FM radio transmission ends. The random static sound is actually the radio trying to decipher the ambient background noise into meaningful audio. Usually this noise is hidden from the listener with the squelch function on the radio. In typical squelch systems, the audio circuit is turned off if the radio isn't receiving a signal of a certain minimum signal strength. The squelch tail occurs when the transmission has just ended and the radio circuitry doesn't respond quite fast enough. This is remedied by systems like STE or Squelch Tail Elimination by Motorola which send a brief subaudible tone right before the end of the transmission so that the audio circuit turns off before the modulated signal ends. Creative use of CTCSS like turning off the tone generation circuit on a repeater before the repeater tail will work for radios using tone squelch on both transmit and receive.
by IrishRepublicanArmy December 20, 2003
A news radio station that calls themself's a network. The fact that they have only three transmitters.
by IrishRepublicanArmy November 28, 2003