irishrepublicanarmy's definitions

netiquette

Netiquette refers to the forms, manners and actions established by the Internet community as acceptable or required behavior in social interactions via e-mail. In other words, being polite to your fellow list subscribers. It is absolutely imperative that you familiarize yourself with the rules of netiquette before you launch headlong into participation in any sort of e-mail discussion list.

The established conventions of online politeness are called netiquette. Some conventions vary from site to site or online medium to online medium; others are pretty standard everywhere. Newbies are often unfamiliar with the conventional rules of netiquette and sometimes embarrass themselves accordingly. Be sure not to send that incredibly important e-mail message before reading about netiquette.

Those morons who flood the AIM chat rooms with porn ads need so learn some netiquette.

by IrishRepublicanArmy January 3, 2004

Sporadic E

Irregular scattered patches of relatively dense ionization that develop seasonally within the E region and that reflec­t and scatter frequencies up to 150 MHz. Note 1: The sporadic E is a regular day­time occurrence over the equatorial regions and is common in the temper­ate latitudes in late spring, early summer and, to a lesser degree, in early winter. Note 2: At high, i.e., polar, latitudes, sporadic E can accompany auroras and associated disturbed magnetic conditions. Note 3: The sporadic E can sometimes support reflec­tions for distances up to 1000 miles or more at frequencies up to 150 MHz

I got some nice 6-meter DX contacts with yesterday's sporadic E.

by IRISHrepublicanARMY January 3, 2004

spread spectrum

A signal struc­turing tech­nique that employs direct se­quence, frequency hopping or a hybrid of these, which can be used for multiple access and/or multiple func­tions. This technique decreases the potential interfer­ence to other receivers while achieving privacy and increasing the immunity of spread spec­trum receivers to noise and interference. Spread spec­trum generally makes use of a sequential noise­‑like signal structure to spread the normally narrow­band informa­tion signal over a relatively wide band of frequencies. The receiver corre­lates the signals to retrieve the origi­nal informa­tion signal (NTIA)

Normal scanners cannot get spread spectrum transmissions.

by IRISHrepublicanARMY January 3, 2004

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

WGS84

World Geodetic System 1984. WGS 84 is an earth fixed global reference frame, including an earth model. It is used for GPS systems.

The new CAP plane has a nice GPS but no freaking ADF or DME WTF?

by IrishRepublicanArmy January 4, 2004

703

The area code for Northern Virginia

for more information about the NOVA area, look at theses definitions:
Fairfax County Public Schools
Virginia
NOVA
Chantilly High School
Fairfax High School

by IrishRepublicanArmy January 5, 2004

Tiocfaidh Ár Lá

"Our day will come" in Irish (Gaelic). Some also interprit it to be something along the lines of "Tommorow is ours"

Tiocfaidh Ár Lá is a popular phrase used by Irish Nationalists...however, me being an IRA supporter, screw them

by IrishRepublicanArmy January 5, 2004