Well, thats great to learn agn about MMTTY. Several things get loose
without repeated use/checks ...
I still use it and I will use it, with my two K3, in FSK. That's too
easy to have an operator that mismatch something with AFSK during
contests. That's to easy to get a signal on P3, "spin" the VFO and
continue inside the MMTTY waterfall to get onto it, as to check which
one rich multiplier is him or not. Then I should make a Mark, call not
recognized, or a Store, call recognized, or even try to catch on his
timings to call him. All those actions depending on what's going on and
other contests/operators/setups requirements.
It wouldn't be an easy task, like the one described, to catch him
without the bigger MMTTY waterfall and its scope. That's what I
discovered myself doing.
Ears also help a lot, even on SO2R, one radio with Mark at 2125 Hz and
the other with Mark at 1275 Hz.
I'd started FSK with MMTTY, that's another of the maybe I wouldn't use
2Tone as the main RTTY window right now.
Usually my profile on MMTTY is only one, well nailed down, no AFC and no
other fancy things, FIR filters and all other parameters pretty
standard. Often I have had on hands very old and not performing PC ...
standard FIR parameters could deal with the 97% of signals. The two
2Tone companions decoder, I have a grand total of six decoders running
SO2R, printout very well and leave me the ability to discover known
calls pattern the 99.00 % of times. Over 24 or 48 only few signals get "
... pse come back later on" ...
Even on 500 Hz K3 filters. The two 2Tone windows are set one and one
flat and one flutter, those two also contribute very well to solve that
big estimated number of cases.
I didn't used that much at all the Dual PBT or TPF audio enhancer
filter, but often I see other operator sill using it, event if MF aren't
too tight, I men even at 500 Hz. Where I catted out the DSP entrance
point for the 400 Hz 8 pole filter of the K3. The 250 Hz 8 poles is
incoming at 300Hz, it's much needed when the rattles comes in.
About rattles, may everybody knows what I mean - those OM with large
signals - not anyway too strong but often large more than the right ...
I have to admit that since the great job that Elecraft had done on the
FSK TX signal inside the K3 RTTY generator I have more and more problems
from rattling operators. It's happening more and more times now, since
that K3 change, that rattling operators come on my signal. Maybe this is
just a personal perspective, due to more strict observation on K3, due
to the great effectiveness of the operations. Due to propagation
condition that drive, over their changing behavior, some part of the
world in between me and my target of the moment.
But, anyway, the large waterfall and the scope of MMTTY are the last
mile drivers for my attention when tired and still having to operate
bottom on the chair.
I could learn different techniques, a wish is often must to understand,
maybe looking at the P3 and having some macro to drive its windows
spanning. This will keep me out of action focus having to search for the
macro button, until I don't learn the new gesture.
So by now it's much more easy to continue on the known road. Main decode
MMTTY with two companion 2Tone windows. All with different filtering as
to catch all those nice signal out and inside the log, seamlessly at
any time. All the right jobs are done, easy, for me. I need all the two
things, hope I could use all the two for a lot of great contests. I.e OS
changes, different interfaces, rigs, whatever reasonably could come to mind.
BTW I don't think that AFSK is bad, just it is not seamless from start
to end of any contest, for any operator, for any case, band by band,
setup by setup ... and at least for me when I am tired after hours and
hours of pure joy and in need to stay there more. Lastly, why bother
with K3 when peoples get too often onto my signal. Hope not to be too
quick and dirty with my poor English.
73 de iw1ayd Salvo
PS I'd prefer NFS over LM, for work with those.
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