Testing with FT8CN and AndFlmsg was successful.
Further testing with FLDigi and FLRig with QMX in VOX mode, The brief transmit burst then unkey continues, If i disable PTT in FLRig then the VOX PTT is successful and CAT frequency, Mode and RF gain is functional.
Conclusion: There appears to be a conflict between the VOX PTT and CAT PTT, even when VOX it turned off.
Also noticed that the "Minimum Cycles" setting ( in Main Menu/ Configuration/ Digi Interface ) keeps jumping around. It was set at 1 now it shows 131074
73, Kevin
K3TL