ARRL Communications Procedures
ARRL Communications Procedures
| Voice | Code | Situation |
|---|---|---|
| Go ahead | K | Used after calling CQ, or at the end of a transmission, to indicate any station is invited to transmit. |
| Over | AR | Used after a call to a specific station, before the contact has been established. |
| KN | Used at the end of any transmission when only the specific station contacted is invited to answer. | |
| Stand by or wait | AS | A temporary interruption of the contact. |
| Roger | R | Indicates a transmission has been received correctly and in full. |
| Clear | SK | End of contact. SK is sent before the final identification. |
| Leaving the air or closing the station | CL | Indicates that a station is going off the air, and will not listen or answer any further calls. CL is sent after the final identification. |
Word list adopted by the International Telecommunications Union
A--Alfa
B--Bravo
C--Charlie
D--Delta
E--Echo
F--Foxtrot
G--Golf
H--Hotel
I--India
J--Juliett
K--Kilo
L--Lima
M--Mike
N--November
O--Oscar
P--Papa
Q--Quebec
R--Romeo
S--Sierra
T--Tango
U--Uniform
V--Victor
W--Whiskey
X--X-ray
Y--Yankee
Z--Zulu
Readability
1--Unreadable
2--Barely readable, occasional words distinguishable.
3--Readable with considerable difficulty.
4--Readable with practically no difficulty.
5--Perfectly readable.
Signal Strength
1--Faint signals, barely perceptible.
2--Very weak signals.
3--Weak signals.
4--Fair signals.
5--Fairly good signals.
6--Good signals.
7--Moderately strong signals.
8--Strong signals.
9--Extremely strong signals.
Tone
1--Sixty cycle a.c or less, very rough and broad.
2--Very rough a.c., very harsh and broad.
3--Rough a.c. tone, rectified but not filtered.
4--Rough note, some trace of filtering.
5--Filtered rectified a.c. but strongly ripple-modulated.
6--Filtered tone, definite trace of ripple modulation.
7--Near pure tone, trace of ripple modulation.
8--Near perfect tone, slight trace of modulation.
9--Perfect tone, no trace of ripple or modulation of any kind.
If the signal has the characteristic steadiness of crystal control, add the letter X to the RST report. If there is a chirp, the letter C may be added to so indicate. Similarly for a click, add K. The above reporting system is used on both cw and voice, leaving out the "tone" report on voice.