Procedure word

Procedure words or prowords are words or phrases limited to radio telephone procedure used to facilitate communication by conveying information in a condensed standard verbal format. Prowords are similar to the much older prosigns for Morse code first developed in the 1860s for Morse telegraphy.

"Confirm" or "Yes", used in Aviation. Some air arms of military forces also use a "double click" sent over the radios by keying the mic twice to produce a "--" like Morse code, this is usually used when the pilot is unable to talk due to heavy workload or stress.

In amateur radio transmissions, the transmitting station's call sign followed by the word "clear" is used to indicated the sending station is done transmitting and leaving the airways, alias turning off the radio.

Used to ask questions in a way that is clear to speak and listen to while at the same time shortens the number of words. Instead of asking "How long will it take to repair the generator?" the radio operator says "interrogative: time to repair generator".

"No" or "NEG". Because over a poor quality connection the words "affirmative" and "negative" can be mistaken for one another (for example over a sound-powered telephone circuit), United States Navy instruction omits the use of either as prowords. Sailors are instructed to instead use "yes" and "no".

"This is the end of my transmission to you and no answer is required or expected."

"This is the end of my transmission to you and a response is necessary. Go Ahead: transmit."

Contrary to popular belief, "Over" and "Out" are never used at the same time, since their meanings are mutually exclusive. With spring-loaded PTT buttons on modern combined transceivers, the same meaning can be communicated with just "Out", as in "Ops, Alpha, ETA five minutes. Out."

"I have received your last transmission satisfactorily, radio check is loud and clear." "Roger" is used occasionally to mean "yes", but the proword for "yes" is "Affirm".

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