Squad 51!

An exclamation, from the 70s show Emergency.

It comes from the fire department dispatch guy that goes "Squad 51!"

"(random DTMF tones) Squad 51! (insert random dramatic event here)

"roger, squad 51, KMG365"

by IrishRepublicanArmy November 28, 2003

picket fencing

(Repeater Term) A condition experienced on VHF and above where a signal rapidly fluctuates in amplitude causing a sound akin to rubbing a stick on a picket fence. If a repeater user's signal isn't strong enough to maintain solid access to the machine's input (such as when operating from a vehicle passing beneath underpasses or through hilly terrain), the signal would be hard to copy because of a pronounced, rapid fluttery or choppy characteristic.

We can't copy you, you're picket fencing really badly.

by IrishRepublicanArmy January 01, 2004

PSK31

A digital transmission mode -- Phase Shift keying with 31.25 baud rate

PSK31 is one of the better HF operating digital modes.

by IrishRepublicanArmy January 01, 2004

alpha

the letter 'A' in the international radio phonetic alphabet

also used in military radio slang for comanding officer or radio station

Tango six one this is alpha

by IrishRepublicanArmy October 13, 2003

Type 3 Algorithm

Cryptographic algorithm that has been registered by the National Institute of Standards and Technology and has been published as a Federal Information Processing Standard for use in protecting unclassified sensitive information or commercial information. NTIA

The US Government uses the type 3.

by IrishRepublicanArmy June 11, 2006

Geosynchronous Orbit

An orbit that permits a communications satellite to mantain a fixed position relative to the surface of the earth.

Many of the radio communications satellites the USA puts up are in a geosynchronous orbit.

by IrishRepublicanArmy December 29, 2003

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