[RTTY] MMTTY difficulties

ham at n0sq.us ham at n0sq.us
Fri Feb 8 18:49:43 EST 2013


ERROR: Unable to open EXTFSK

Kok Chen <chen at mac.com> wrote ..
> 
> On Feb 8, 2013, at 1:24 PM, ham at n0sq.us wrote:
> 
> > I reversed polarity in the TS2000 (MMTTY + N1MM software). The Kam+ is connected
> to a TS450.
> > ...
> > I haven't tried EXTFSK yet. But, I do have access to an oscilloscope.
> 
> Aha, therein (those two statements) might be the clue we sought :-).
> 
> You said you have not tried EXTFSK yet -- that means you are transmitting in AFSK!
> Not FSK.
> 
> If so, reversing the polarity of the TS2000 FSK transmit setting will do nothing
> (unless you swap USB/LSB in data modes).
> 
> What you need to do is to go into MMTTY settings and reverse its transmit AFSK
> tones.
> 
> I don't run MMTTY (or any Windows program, actually), but someone else here can
> probably immediately point you to where to reverse the MMTTY AFSK tones.
> 
> GL es 73
> Chen, W7AY
> 
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