Sunday, August 5, 2012
THE RST SIGNAL REPORTING SYSTEM
The RST system is a way of reporting on the quality of a received signal by using a three digit number. The first digit indicates " Readability" ( R ), the second digit indicates received "Signal Strength"(S) and the third digit indicates "Tone" (T). A fourth character is used on rare occasions to indicate the presence of a defectively keyed CW signal.
For example, a signal report of 589 indicates a completely understood strong CW signal with an excellent note. On the other hand, an RST of 387C would be a dificult-to-copy, chirpy transmission. Most signal reports have an "R" of 4 or 5 and "S" and "T" of 7 to 8.
READABILITY (R) Voice and CW
1 - Unreadable
2 - Barely readable, occasional words distinguishable
3 - Readable with considerable difficulty
4 - Readable with practically no difficulty
5 - Perfectly readable
SIGNAL STRENGH ( S) Voice and CW
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 (T) Use on CW contacts only
1 - Extremely rough ac tone and very broad
2 - Very rough ac tone, very harsh and broad
3 - Rough ac tone, rectified but not filtered
4 - Rough note with some trace of filtering
5 - Filtered rectified ac but strong ripple modulation
6 - Filtered tone with definite trace of ripple modulation
7 - Near pure tone, trace of ripple modulation
8 - Near perfect tone, slight trace of modulation
9 - Pure DC note with no trace of ripple or modulation of any kind
CHARACTERISTIC ( Optional, CW only)
X - Very stable signal, the quality of crystal control ( usually understood and hardly ever used )
C - Chirpy keyed signal or frequency variation defect
K - Key click or noticeable make/break keying flaw
RST 559 CW QSOs
CW QSO with Anton from Birmingham, England - 10901.9 km dari Kulaijaya, Johor.
Beberapa minggu yang lalu, aku telah berjaya menyiapkan sebuah antenna dipole ( wayar antenna). Dimana antenna ini dibina berdasarkan ...
Cuaca sangat baik hari ini, cuaca cerah dan berangin dari pagi sehingga ke petangnya. "Jom kita pi Taman Ular nak tak? kataku kepada A...