ARRL/NTS Communications Procedures and Phonetics

 

This is standard ARRL operating information and procedures to be used on NTS Nets.

This information can also be found on the ARRL web site by clicking here.

 

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
STANDY BY AS A temporary interruption of the contact
or WAIT
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

ITU PHONETIC ALPHABET

 

A ALPHA J JULIETT S SIERRA
B BRAVO K KILO T TANGO
C CHARLIE L LIMA U UNIFORM
D DELTA M MIKE V VICTOR
E ECHO N NOVEMBER W WHISKEY
F FOXTROT O OSCAR X X-RAY
G GOLF P PAPA Y YANKEE
H HOTEL Q QUEBEC Z ZULU
I INDIA R ROMEO

THE RST SYSTEM

 

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. Turn card over for examples.