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MS Procedure |
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The following procedure is based on the IARU Region 1 MS procedure and is recommended to ensure your QSO is completed correctly and possibly quickly too :-
- A report is sent when positive evidence of having received the correspondent's or own callsign or parts of one of them.
e.g. G4PCI G0CHE 27 27
- If you have received both calls and a report, send both calls , R plus your signal report.
e.g. G4PCI G0CHE R27 R27
- If you have received R plus signal report, send RRRRRRRR and your call
e.g. G0CHE RRRRRRRR
- If you have received RRRRRR - that is, a definite acknowledgment of all of your information - the QSO is officially complete.
However, the other station may not know this, so it is conventional to send 73s (or some other information) to signify that you are done.
e.g. 73 G0CHE or 73 TNX CHE or 73 IO90PS etc.. |
- So if you have just heard report and both calls you're response will be R+report and both calls
e.g. hear 36 36 G0CHE G4PCI - respond with R27 R27 G4PCI G0CHE
- Alternatively, if you are already sending report and both calls and you hear R+report (and both calls) you're response is RRRRRRRR + yourcall
e.g. hear R36 R36 G0CHE G4PCI - respond with RRRRRRRR G0CHE
- Response to hearing RRRRRRRR +callsign is usually something like 73 TNX
- Your QSO will be completed much quick if you follow the above guidelines (of course dependent on propagation conditions).
Do not reply to R+report with R+report i.e. do not echo received message - proceed to the next appropriate message.
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- Note that a different procedure is used in North America.
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MS QSO report consists of two numbers: |
First number (burst duration) |
Second number (signal strength) |
2 :up to 0,5 s |
6 :below S2 or below 5 dB |
3 :0,5 - 1 s. |
7 :from S2 to S3 or from 5 dB to 10 dB |
4 :1 - 5 s |
8 :from S4 to S5 or from 10 dB to 15 dB |
5 :longer than 5 s |
9 :above S5 or above 15 dB |
Note that the number "1" is not used as the first number/burst duration. |
Maximum duration of a ping (Underdense Reflection): 1000mS |
The above is from IARU VHF Handbook V5.11 2006 which can be found
here. |
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- With MS qso's, use the standard reporting procedure, e.g. 27, 36 etc. see above. However with ES/TROPO qso's
I and others adopt a RST report, typically 59 or 599. Remember that the report is based on the first signal heard from your QSO partner. Do not change
it later in the QSO, even if conditions change, say from MS to ES, or an extremely long MS burst, as it may cause confusion to your QSO partner.
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- To summarise, you only respond with the next Msg to what you have just decoded - simple !
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