Procedure word
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Procedure words or prowords are words or phrases limited to radio telephone procedure used to facilitate communication by conveying information in a condensed standard form. [1]
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[edit] Examples of Commonly Used Procedure Words
[edit] OUT
This is the end of my transmission to you and no answer is required or expected.
[edit] OVER
This is the end of my transmission to you and a response is necessary. Go Ahead: transmit.
[edit] RADIO CHECK
What is my signal strength and readability; how do you hear me?
5x5 is an older term used to assess radio signal strength, as in 5 out of 5 units of clarity and volume. Other terms similar to 5x5 are "loud and clear" or "Lima and Charlie"
[edit] ROGER
I have received your last transmission satisfactorily, radio check is loud and clear.
[edit] THIS IS
This transmission is from the station whose designator immediately follows.
[edit] WILCO
I have received your transmission, understand it, and will comply, to be used only by the addressee. Since the meaning of ROGER is included in that of WILCO, the two prowords are never used together.
[edit] Example of Radio Communications Using Procedure Words
[edit] Example 1
The following is a series of radio communications in which one station calls another station asking if their transmission is readable. ALPHA 12 and X-RAY 23 are both call signs representing different stations.
- ALPHA 12: X-RAY Two-Three, THIS IS ALPHA One-Two, RADIO CHECK, OVER
- X-RAY 23: ALPHA One-Two, THIS IS X-RAY Two-Three, I READ YOU 5 BY 5, OVER
- ALPHA 12: ALPHA One-Two ROGER, OUT
[edit] Example 2
2 helicopters are flying in formation, Indian 610 and Indian 613:
- Indian 610: "613, I have a visual on you at my 3 o'clock."
- Indian 613: "Roger."
- Indian 610: "613, Turn right to a heading of 090."
- Indian 613: "Wilco."
Translation by Navy Pilot from California: "Anytime a radio call is made, there's some kind of response indicating that the original call was heard. 613's "Roger" confirms to 610 that the information was heard. In the second radio call from 610, direction was given. 613's "Wilco" says I heard you and I will do what you told me to do. The reply, 'Roger Wilco', is considered wrong.
