Jim,
Thank you, it's very impressive to see the dynamic range that you
can achieve.
--
73 Warren K2ORS
WD2XGJ
WD2XSH/23
WE2XEB/2
WE2XGR/1
On Sat, Feb 12, 2011 at 9:46 PM, James Moritz
<[email protected]> wrote:
> Dear Warren, Mal, LF Group,
>
> I took the opportunity of your sked to try simultaneous reception of the Eu
> / NA QRSS windows - really, I was hoping G3XDV would be transmitting as
> well, since he is only about 11km from me and would be a good challenge for
> the receiver. I think it is possible by carefully adjusting the various
> gains to reduce the "splatter" caused by such a local signal to allow the
> copy of relatively DX signals within a few hertz. This didn't happen, but I
> was able to simultaneously receive WD2XGJ, G3KEV, PA0A, RA3AGC and DF6NM.
> The attachment shows signals from about 2245 - 0112utc; it is screen shots
> from two instances of SpecLab edited together, and the scroll rate was
> increased at about 0000, which is why the time markers don't match up
> perfectly.
>
> Concerning QSOs in QRSS with very long dot periods, I think this shows how
> it is most important to agree the format and the protocol for the QSO before
> starting. I think the generally accepted format goes something like:
>
> XGJ KEV K (for a sked, or CQ KEV K for a random QSO, repeat as necessary)
> ...then...
> KEV XGJ O K
> XGJ KEV R O K
> KEV XGJ R TU SK ...(end of QSO)
>
> It is probably best to decide from experience who is likely to be the weaker
> received signal, and for that station to make the initial calls, since then
> subsequent overs are most likely to succeed. If one station fails to
> completely receive an over, they should repeat their previous over so that
> the other station can repeat also. Some will insist that complete callsigns
> should be used for the initial overs, but I think most agree on the
> abbreviated calls, especially for a sked. Some people omit the "K" at the
> end of an over, or substitute an "E", but I think this is a bad idea because
> under marginal conditions it is harder to tell when the other station has
> stopped transmitting.
>
> Hope this is helpful - better luck next time!
>
> Cheers, Jim Moritz
> 73 de M0BMU
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