The requirement for the exchange of two complete callsigns makes
extremely poor use of a limited time slot. Even HF DXers do not do
this any more.
I believe there are two minimum requirements:
The first is to know for certain that the station you are listening
to cannot be someone else (or something else). In this case a single
letter (either pre-arranged or part of the callsign) should be
adequate.
The second is a piece of unknown information. Usually this would be a
signal report (though again HF DXers have scrapped the unknown by
sending 599 every time). The "unknown" can be chosen from a subset,
such as the numbers in a report or the 'O', 'M' or 'T' used in QRSS-
type modes.
And of course the timing of the transmission will serve as
confirmation that this is not a random reception.
This may not please the purists, but it is certain proof of two-way
communication, and (as I said) is better than a 20m DXpedition QSO
accepted for DXCC will give you.
Mike, G3XDV
==========
> Recently i talked to Markus/DF6NM what has at least to be transmitted
> within a valid QSO in very slow DFCW. I mean a 2way contact, not a
> beacon reception report!
>
> Those of you (and others) who have done successful TA QSOs may give me
> an example. Are there official rules/laws about that?
>
> If i would do a QSO with Markus like that, would it be valid?:
>
> Me: "dk7fc/p k" (the /p may be cancelled but it is "my label" ;-) )
> Markus: "fc df6nm O k" Me: "nm fc r M sk" Markus: "r sk"
>
>
> 73, Stefan/DK7FC
>
>
>
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