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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 5, 2004

316👍 78👎


occoquan

crew slang:

park in northern virginia, run by the Northern Virginia Regional Park Authority. Its right on the occoquan sewage dump (a.k.a. occoquan reservoir)

place were all the good crew teams practice (or in the case of TJ crew, sit around and play on thier TI-83s). Also the site of the NCASRA crew races. Good place with lots of good memories.... also where fairfax crew owns all.




Occoquan, here we come...

by IRISHREPUBLICANARMY October 21, 2003

4👍 7👎


VHF

1) The Very High Frequency communcations band from 26.985 to 174 MHz or 30 to 300 MHz, the most popular local (less then 200 mile range) communication band

2) the VHF-AM civilian aircraft communcation band 118 to 137 MHz
see UHF

"Roger, we got you on VHF 122.9"

by IRISHREPUBLICANARMY October 13, 2003

29👍 9👎


blue chip

A high-quality, relatively low-risk investment; the term usually refers to stocks of large, well-established companies that have performed well over a long period.

I just put $500 on some good GE blue chip stock.

by IRISHREPUBLICANARMY February 11, 2004

88👍 29👎


F region

That portion of the ionosphere existing between approximately 160 and 400 km above the surface of the Earth, consisting of layers of increased free-electron density caused by the ionizing effect of solar radiation. Note 1: The F region reflects normal-incident frequencies at or below the critical frequency (approximately 10 MHz) and partially absorbs waves of higher frequency. Note 2: The F1 layer exists from about 160 to 250 km above the surface of the Earth and only during daylight hours. Though fairly regular in its characteristics, it is not observable everywhere or on all days. The principal reflecting layer during the summer for paths of 2,000 to 3,500 km is the F1 layer. The F1 layer has approxi­mately 5 ´ 105 e/cm3 (free electrons per cubic centi­meter) at noontime and minimum sunspot activity, and increases to roughly 2 ´ 106 e/cm3 during maxi­mum sunspot activity. The density falls off to below 104 e/cm3 at night. Note 3: The F1 layer merges into the F2 layer at night. Note 4: The F2 layer exists from about 250 to 400 km above the surface of the Earth. The F2 layer is the principal reflecting layer for HF communications during both day and night. The horizon-limited distance for one-hop F2 propagation is usually around 4,000 km. The F2 layer has about 106 e/cm3. However, variations are usually large, ir­reg­ular, and particularly pronounced during magnetic storms.

good thing there are like 10 people in the world who know what that means

by IRISHREPUBLICANARMY January 3, 2004

47👍 31👎


calibration

1) The process of comparing an instrument's output signal with reality. Instruments that measure solar energy tend to "drift", that is, their output signals do not mean the same thing from one time period to another. Because of this, they are periodically (annually or semi-annually) re-calibrated against more reliable instruments.

2) Adjusting a measuring instrument to make it accurate. The set of operations which establish, under specified conditions, the relationship between values indicated by a measuring instrument or measuring system and the corresponding values of a quantity realized by a reference standard.

3) The act of adjusting the color of one device relative to another, such as a monitor to a printer, or a scanner to a film recorder. Or, it may be the process of adjusting the color of one device to some established standard.

This radio needs some calibration.

by IRISHREPUBLICANARMY December 26, 2003

10👍 17👎


white noise

(Repeater Term) is a scientific term used to describe a spectrum of broad band noise generated in a receiver's detector and sampled to control the receiver's squelch. This term is often incorrectly used in repeater work to describe the sounds heard when the received transmission is noisy and hard to understand, usually attributed to a weak signal and the repeater receiver limiters are not engaged.

Many people do not understand the correct usage of 'white noise'

by IRISHREPUBLICANARMY January 1, 2004

141👍 43👎