AFC

Automatic Frequency Control, a device used in FM recievers to prevent drift.

My DX-397 has an AFC.

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VOR

Very High Frequency
Omnidirectional
Range


a radio-navigation system that consists of ground stations transmitting continous signals within the frequency range of 108.0 to 117.95 MHz. mode of modulation is CW or AM.

The VOR system is used by both civilian and miltary aircraft in conjuction with the GPS and ADF (also known as NDB) radionavagtion systems. The receiver in the aircraft determines the bearing of the station in relation to the direction the aircraft is going. This information is used by the pilot to navagate the aircraft. The VOR system is used worldwide and is less suspectable to the magnetic interferance that the ADF/DME and LORAN systems are.

"Roger, Cessna Five Five Tango, Dulles VOR is on 114.3, advise control you have entered class B airspace."

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ADF

Automatic Direction Finder
or
Automatic Direction Finding System

a navagation system used by aircraft and sea-going ships. It consists of one or more ground stations that transmit a signal in the 225 to 500 kHz (.225 to .500 MHz) range. Because of the low-frequnecy of these signals, their range is very good and not limited by the line-of-sight range of the VOR system. The recevier in the airplane/boat uses a loop antenna to "home-in" on the station. There is also a long-wire receiving antenna installed on many aircraft. Most ADF receivers can also recieve the AM broadcast band (530 to 1710 kHz) so pilots can also home in on powerful broadcast stations.

ADF signals should not be used in thunderstorms because the high amount of electro-magnetic interferance that lightening causes.

Many pilots can't even use the ADF system, which is a shame, becuase of better systems such as VOR and the GPS systems.

"In most of the third world, the ADF navigation system is the only way to go"

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Dapper Dan

USAF radio code for command post or any other station that somewhat has command over something. Not used in UHF communications band. It is mostly the VHF tactical communications band (30 to 50 MHz)

Dapper Dan, this is alpha six, we have the enemy engaged.

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East India Company

An English company formed in 1600 to develop trade with the new British colonies in India and southeastern Asia; in the 18th century it assumed administrative control of Bengal and held it until the British army took over in 1858 after the Indian Mutiny

I have no idea why I am putting this definition in here, after all, its an urbandictionary, and this is history.

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shortfall

the quantity or extent by which something falls short; deficiency; shortage

This school is a shortfall

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Vitamin G

Well its like gasoline

In fact, it really is.

Bart: Man i hate mowing the lawn
Homer: Here, use Vitamin G
(grass lites on fire)
Bart: Umm...dad
Homer: Don't worry it's a "Controlled Burn"

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