Aluminum Overcast

Pilot slang for the the B-17 flying fortress.

The pimpmobile of bombers.

We still gots a few Aluminum Overcast's flying, thanks to the Confederate Air Force

by IrishRepublicanArmy November 16, 2003

freeband

The term "freeband" pretty much refers to the 25.1000 MHz (25100.0 kHz) to 28.0000 MHz (28000.0 kHz) band, although people do operate "freeband" above those ranges, and into the 10-meter ham radio band (which is REALLY illegal). Freeband comes from the 26.9650 to 27.4050 MHz CB radio band. Because of heavy use of this band al around the world (in all modes, AM, SSB, FM). People started to modify thier CB radios to operate above or below (usally above, in the 27.4150 to 28.775 MHz range) the normal CB band. Really, this band has very little users, the military and government have a few channels, and 28.000 to 29.700 is ham radio, and there are a few channels allocated to the Forest Products Radio Service/Business Radio Pool.

The most common modulation mode is SSB.

The international calling frequency is 27.555 MHz (27555.0 kHz)

The DX-949 is a common freeband radio.

by IrishRepublicanArmy December 20, 2003

gray market

Halfway between the white market (completely legal) and black market (completely illegal). The gray market sells products which are legal to own, but can be used illegaly or are illegal to use completely.

In Virginia, police radar detectors are gray market items because it is legal to own one, but illegal to actully use it.

by IrishRepublicanArmy June 05, 2004

kiddie crack

street name 4 fun dip

Yo! hit me up for some of that kiddie crack

by IrishRepublicanArmy December 20, 2003

de-icer

pilot speak:

A device designed to operate under all weather conditions, except icing.

United 460, ice at FL 370 and FL 250, be advised.

by IrishRepublicanArmy December 22, 2003

radio

1) A form of wireless communications in which the output of the transmitter takes the form of dissipating electromagnetic radiation which spreads outward from the antenna through free space. The signal strength drops off as the square of the distance from the source of radiation. Distant radio receivers have to be very sensitive to detect signals that can measure only a few microvolts per meter in strength.

2) A communications device allowing the wireless transmission through space of audible signals encoded in electromagnetic waves in the approximate frequency range from 10 kilohertz to 300,000 megahertz.

3) (maratime definition) An instrument that uses electromagnetic waves to communicate with other vessels. VHF radios are common for marine use, but are limited in range. HF-SSB (single sideband) radios have longer ranges.

4) an electronic receiver that detects and demodulates and amplifies transmitted signals

5) Radio is a system for the distribution of advertisement, chiefly brand advertisement for package-goods, and advertisement for recorded music sold by BigCos. To describe radio as a system for the diffusion of news, or of music, or as a technology, would be not only inaccurate but actually misleading. Radio is a creature of the advertising business, as its child, TV. television

6) Transmit messages via radio waves, usally on a set wavelength, or frequency.

There are many differant types of radio-frequency modulation, these include AM and FM.

by IrishRepublicanArmy December 31, 2003

oscilloscope

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.

I use my oscilloscope to measure the waveforms of my 27 MHz band jamming transmitter.

by IrishRepublicanArmy January 02, 2004