Mayday

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.
"Coast Guard, this is the Andrea Gail, MAYDAY MAYDAY MAYDAY"
by IrishRepublicanArmy October 28, 2003
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ALE

Automatic Link Establishment (station)

In high-frequency (HF) radio, the capability of a station to make contact, or initiate a circuit, between itself and another specified radio station, without human intervention and usually under emergency conditions. ALE stations are generally computer-controlled.
The Air Force has ALE frequencies in the 11 and 19 MHz bands.
by IrishRepublicanArmy January 24, 2004
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Forest Gump

an excellant movie...need i say more?
by IrishRepublicanArmy December 12, 2003
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Agent White

the less potent and more expensive alternative to Agent Orange
sense it costs more money and kills less VC, the United States pretty much never used it during the Vietnam War.
by IrishRepublicanArmy March 03, 2004
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worst hour of the year

That hour of the year during which the median noise over any radio path is at a maximum.
Note: This hour is considered to coincide with the hour during which the greatest transmission loss occurs.
by IrishRepublicanArmy January 24, 2004
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DTMF

Dual Tone Multiple Frequency. Pressing a button on the keypad of a touch-tone phone generates a pair of tones of specified frequency and duration. The network or the equipment at the other end of the connection (such as a remote control for a phone answering machine, or a telephone interconnect system) detects and interprets these tones. In analog networks, audible tones generated by the network provide the call progress indications to the user. Different tones allow the human ear to interpret the progress of the call. On digital networks (such as PBX or ISDN), the network may send indication messages to the phone to indicate the status of the call, and the phone may generate most tones locally, driven by those messages.
by IRISHREPUBLICANARMY January 10, 2004
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GSM

Global System for Mobile communications.

The most common digital cellular system in the world. GSM is used all over Europe, plus many countries in the Middle East, Asia, Africa, South America, Australia, and North America. GSM's air interface is based on narrowband TDMA technology, where available frequency bands are divided into time slots, with each user having access to one time slot at regular intervals. Narrow band TDMA allows eight simultaneous communications on a single radio multiplexor and is designed to support 16 half-rate channels. GSM also is the only technology that provides incoming and outgoing data services, such as email, fax, and internet surfing. GSM makes use of a SIM card that allows memory portability between dumb GSM phones.
The GSM system allowed for both internet surfing and digital voice communications over 1900 MHz radio networks.
by IrishrepublicanArmy January 24, 2004
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