[Moon] DUBUS 23cm Results, G3LTF
Nando Pellegrini
nando.pellegrini at tiscali.it
Mon May 17 18:20:19 CEST 2021
Hi Peter,
Thanks for the pleasure for making a QSO with you and nice description
of your setup.
I am doing all most the same and have a Perseus Receiver in parallel
with the IF out of the transverter and a big monitor on the PC screen
where i can see the smallest signal but even so there is a latency
before having detected an out of frequency signal and put it in the
center of your filter and sometimes is too long, i am using a K3 as
receiver and always with the 50Hz filter that works very well. The
receiver has also an APF but which,i guess, is only a few hertz wide and
it doesn't help with signals from the moon and the information is
deteriorated instead of having an advantage at least for my ears.
Another problem i have noticed with very weak signal, is a very often
sending the call sign stored in a circular buffer with a link between
the end and the start so not allowing to distinguish the 2 when
repeating it.
Only very little considerations not so important and with no effect to
the contest value
73 ant to the next,nando
On 5/17/2021 16:38, Peter Blair via Moon wrote:
> It was such a pleasure to be back on EME again. We had a lot of rain but very little wind and the gear all worked fb.
> I worked 72 in total, all random, including 2 ssb. List will be in next NL. This is my highest ever score for this contest. Great to add DU as #78 dxcc
> Stations called with no reply (cwnr) CT1FGW, YO2BCT, RA4HL, IK3GHY, VK4AFL, DJ7FJ, KN0WS and heard AA4MD, IK2MMB,DL7UMA
> Two operating points. I think that you need some sort of frequency display, to catch people calling off frequency ( a smart move in a pile up anyway) and to catch people tailending you when its NOT your frequency, and to spot the really weak ones. There are also stations where the LO shifts between tx and rx, (not uncommon in HB systems, been there) and they end up off frequency.
> Second point is that I now have this lovely TS590SG with excellent DSP down to 50Hz and 1 Hz RIT but I still find an additional improvement in very weak signal readability when I add my old tuneable switched capacitor MF8 filter set to 50Hz, I suspect it maybe a passband shape effect. ( PA2DW, Dick, yes you were the weakest)
> Thanks to everyone for the great QSOs and nice comments. I can be QRV until the moon gets down to about –12degrees declination if anyone wants a test.
> 73 Peter G3LTF
> 6m 250W
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