[RTTY] 2Tone - not better than MMTTY on Florida East Coast

Dave Hachadorian k6ll at arrl.net
Fri Mar 15 14:50:19 EDT 2013


>In listening to a dozen or more RTTY signals from  Europe, 2Tone
>did not
>decode as accurately as MMTTY at my QTH, whether the  signal was
>strong or
>weak, MMTTY decoded more accurately.  Most of the signals had
>flutter on
>them and even though flutter was  selected on 2Tone, MMTTY still
>decoded better.

I haven't had much luck with the "flutter" setting.  "Normal"
always seems better to me, even on fluttery signals.  The jury is
still out, in my mind anyway, between filter 1 and filter 2.  I'm
leaning toward filter 1.  Maybe G3YYD can fill us in on his
survey results.


>I really miss not having the X-Y scope on 2Tone.   Perhaps
>there's a way to turn X-Y on?

I think 2tone is most valuable as a complement to MMTTY, rather
than a total replacement.  If you have them both running, and the
mark and space frequencies are identical in both programs, you
can use the x-y scope in the MMTTY window for tuning.

>On my K3, when 2Tone is keyed, I hear a "clicking" sound on  my
>monitor
>before the tones are transmitted.  The  "click" is annoying and 
>I
>don't hear
>that "click" when using  MMTTY.

I use FSK, so I use MMTTY in the main DI Window, and 2tone in the
receive-only window.  You can do the same with AFSK.

>For those of you who have 2Tone decoding better then MMTTY, I
>am happy for
>you!

Don't give up on it.  Try "Normal," "Filter 1," and use 2tone in 
the receive-only window.


Dave Hachadorian, K6LL
Yuma, Arizona




















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