Rural Dictionary

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"

by irishREPUBLICANarmy October 21, 2003

42👍 43👎

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.

by irishREPUBLICANarmy November 7, 2003

56👍 85👎

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.

by irishREPUBLICANarmy December 29, 2004

36👍 9👎

Top 40

Top 40
a FM radio format that usally plays music thats the top 40 on the charts, they may play music that is (sarcastic gasp) more then 2 years old!!!!

GET WITH THE PICTURE PEOPLE...

Top 40 stations suck, most of the good music is older, and is rock/alternative rock.

"I hate Top 40 stations"

by irishREPUBLICANarmy October 12, 2003

162👍 57👎