Finally, after 2 days filled with troubles and problems, I seem to be able to play in RTTY with my FT1000 MKV.
I started on Monday. I decided to prepare my station for some rtty activities and maybe the CQWW contest in September. A long story very short : my laptop's internal soundcard seemed deaf for the incoming signal from the microham microkeyer.
27 € and (only !) one day later, this little soundblaster stick is the correct workaround and works super.
Incoming signal ok.
Second problem : how to get RTTY out of the tx. AFSK or FSK ? Rookie as I am in digital modes, I couldn't find the word FSK on my TX, so I decided to go for AFSK. Wrong !
More than two hours of changing settings on the microham router + N1MM + MMTTY. But no good signal. I had a signal, but I seemed random and not repeatable.
The motivation decreased with the increase of the temperature (it was a hot day in Belgium). However, a phone call with ON5ZO is always the start for a solution. No plug and play solution as Franki is not a rtty-lover, but at least the hint to go for FSK and not AFSK.
Googling on the net, I seems that Yaesu uses the RTTY buttom for FSK operations and the Packet buttom for AFSK. Rookie ² !!
But too much time on google is also bad : I took a totally wrong path with the extfsk.dll feature in MMTTY. Another loss of some hours.
Finally I decided to restart from scratch (without extfsk) and at this moment it seems to work. With a few Watt and no more motivation to go on, I couldn't make a contact, but this is just a question of time. Anyway a Russian station answered my 'ot1a ot1a ot1a' with QRZ? so it means at least a part of my call was in the air.
With more time and good macros, I'll come back after a qsy to DL.
RTTY : what a complex mode and setup system...
CW rules !