[Elecraft] KX3 - AFSK RTTY

[Keith Onishi]

I have been trying to set up for RTTY operation with KX3 + iMic + cocoaModem on Macbook Pro, but not successful.
Mode selection on KX3 is AFSK A and cocoaModem setup is matched to the KX3 setting.
RTTY signal received by KX3 appears not around 2125Hz but around 900Hz. So, I set cocoaModem’s mark frequency to 915Hz. With that setting, decoded text appears on the screen. KX3 VFO is properly tuned to the signal, of course.
When FSK D on KX3, all is same. RTTY signal appears around 900Hz as well.

I found this had been discussed several years ago in the ML, but no change in KX3 specification since then.
I would like to know if this mark frequency is OK in QSO with other RTTY station.

73 de JH3SIF, Keith