irishREPUBLICANarmy's definitions

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

DX-397

The RadioShack DX-397 is based off the SG-344 shortwave and AM/FM radio. It pretty much owns any other analog radio out there.

FREQUENCY COVERAGE:

"MW": 0.530 to 1.710 MHz
"SW1": 4.390 to 5.180 MHz
"SW2": 5.720 to 6.330 MHz
"SW3": 7.000 to 8.050 MHz
"SW4": 9.200 to 10.020 MHz
"SW5": 11.350 to 12.250 MHz
"SW6": 13.250 to 14.290 MHz
"SW7": 15.000 to 16.050 MHz
"SW8": 17.300 to 18.180 MHz
"SW9": 18.700 to 19.250 MHz
"SW10":21.200 to 22.300 MHz
"FM" (yes it gets FM)
88.0 to 108.0 MHz

DX-397 ownage!

by IrishRepublicanArmy November 18, 2003

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

expressway

a highway for high-speed traffic, with few or no intersections and a divider between lanes of traffic moving differant directions

Interstate 66 is an expressway

theres your example, long enough for you>>>??!?!?!?!

by irishrepublicanarmy January 2, 2004

Emergency Frequencies

Here are some common emergency frequencies:

(in MHz)


000.5000 International Distress (CW)
002.1820 International Distress
002.6700 Calling to US Coast Guard
004.1250 Calling/Distress
006.2155 Calling/Distress
008.2570 Calling/Distress
012.3820 Calling/Distress
016.5220 Calling/Distress
027.0650 CB channel 9, emergency
034.9000 Military Low Band Calling
121.5000 International Distress
156.8000 International Distress
243.0000 International Distress

Monitor 2.182 MHz!

by IrishRepublicanArmy December 21, 2003

sober irishman

A mythical creature that only exists in legends and is often seen by drunking irishman.

Used by irish parents to scare their kids.

see irish

If you keep acting that way, you are going to grow up and become sober!

by IrishRepublicanArmy November 26, 2003

Saint Patrick's Day

one of the better holidays, where people who aren't even irish pretend to be, and everyone gets drunk.

On Saint Patrick's Day, we all wore green hats and drank whiskey

by IrishRepublicanArmy March 8, 2004