Hello !
The FT847 with Omnirg PTT and modulation issue might have found a workaround:
In DTR/RTS config Com1 and RTS must be selected, although gray.
In Omnirig RTS-High must be selected (because then a PTT transistor switches on and pulls PTT down).
I had to switch a few times this RTS-Hi to Lo, save, switch back to Hi again and than PTT together with modulation mostly worked.
I must kill Omnirig (Task manager) after varAC because it stays running and stays sitting on Com1.
When there should be time to adress the problem:
The FT847 MUST get PTT (from RTS) and modulation at the same connector.
When PTT comes as a command, then FT847 doesn't know from where to modulate.
Simply: NO PTT command must be sent when using RTS pin.
Sound effects: with only one soundcard the "application sounds" go to the gig modulator (at least my sounds). Strange that I even got PTT with "application sounds" putting these "application sounds" to the antenna instead my ears. Unchecking the use of these sounds stopps that.
Thanks in advance, Michael
Next version (3.7) will support direct freq control of 847. so no need for omnirig anymore for those FT-8XX rigs that VarAC did no support. so interested to see if it works fine with your setup.