Hello Gary, In the mean time I've found the solution. FT991A menu item 62 must be set to others. I hope this will help other VarAC users. 73 Ezio K3EK / F5MWA

Hello Gary, Of course that's what I did. There was a post (Nov. 24 - 2023) from DF7ET concerning the same issue, but the answer given by Irad did not help. I've the menu items 64 and 65 set to 1500Hz, Varac is on 500Hz. I guess I'll have to ask DF7ET how he solved this problem. I also noticed a typo in my previous message, I've to shift to +500Hz and not -500. Thanks 73 Ezio

Hello, Irad's configutation works ok. That's what I was looking for. I'd not realized this option was in the settings menu. Many thanks Ezio - K3EK / F5MWA

Hello John, VARA version must be 4.6.2. i.e. the very latest. Please update and slider will work. I'd the same problem until I updated. 73 - Ezio

Well, I'm sorry. I had VARA 4.6.1 (licensed). It works now....😁

Hello Pat, Irad and Gary, First of all I've to thank Pat for his helpful hints. As a matter of fact I started trying different setups and managed to have VarAC working after a while. However Irad is also right, for Omnirig plays a role in the whole setup. I resume (leaving the Winlink setups by side) the different setups : VarAC on USB-D (U-D on the FT-991A display) Menu item 72 on USB - if on Data not working (no carrier) Menu item 109 can be either on Data or USB, both work VarAC on USB and FT-991A on USB (Omni Rig must be on FT-991-Data, if on FT-991 it does not work) ! Menu item 72 Data or USB, both work Menu item 109 USB, if on Data not working (no carrier) A last word should be said about the ramping complexification of setups in the rigs of the latest generation. There are billions of possible setups and not a single word is spent on the manuals of the different manufacturers to help us Hams use the software of our choice. Not a single example of setup is given on some of the most used software such as HRD or Fldigi only to mention those two. Of course there is Internet but some of us have spent hours to get some of our rigs working with a specific software and manufacturers seem to be unconcerned about this fact. They leave the implementation costs to us Hams or to the software developers (who on their side do NOT have all rigs at their disposal). I've spent my whole life in the world of electronics as an engineer so I can imagine what it means for a newbie to use the newest rigs. And then we complain we have not enough new Hams..... Thanks again to all of you for your assistance. 73 - Ezio F5MWA / K3EK

Hello Pat, Irad and Gary, First of all I've to thank Pat for his helpful hints. As a matter of fact I started trying different setups and managed to have VarAC working after a while. However Irad is also right, for Omnirig plays a role in the whole setup. I resume (leaving the Winlink setups by side) the different setups : VarAC on USB-D (U-D on the FT-991A display) Menu item 72 on USB - if on Data not working (no carrier) Menu item 109 can be either on Data or USB, both work VarAC on USB and FT-991A on USB (Omni Rig must be on FT-991-Data, if on FT-991 it does not work) ! Menu item 72 Data or USB, both work Menu item 109 USB, if on Data not working (no carrier) A last word should be said about the ramping complexification of setups in the rigs of the latest generation. There are billions of possible setups and not a single word is spent on the manuals of the different manufacturers to help us Hams use the software of our choice. Not a single example of setup is given on some of the most used software such as HRD or Fldigi only to mention those two. Of course there is Internet but some of us have spent hours to get some of our rigs working with a specific software and manufacturers seem to be unconcerned about this fact. They leave the implementation costs to us Hams or to the software developers (who on their side do NOT have all rigs at their disposal). I've spent my whole life in the world of electronics as an engineer so I can imagine what it means for a newbie to use the newest rigs. And then we complain we have not enough new Hams..... Thanks again to all of you for your assistance. 73 - Ezio F5MWA / K3EK

Hello Irad, Gary and Pat Thank you for all your comments and suggestions to my post. Here are the requested screenshots of my setup. I agree with all you said but please keep in mind that VARA works fine with Winlink Express, so I do not see any reason why it should not work with VarAC. My FT-991A setup should be the same except if the software uses a different way to use the Audio codec. Irad says the audio is managed by VARA but then why does it not work with VarAC ? As you may see the VARA soundcard setup is identical for Winlink and it works fine. I've never had such a strange occurrence and VarAC was working fine with the very first version. I had a few QSOs in January., however when I run the first version again it does no longer work. I've VarAC in my documents folder as the first version. Thank you in advance to let me know if you find out what may be wrong. 73

Yes, that was it. I had an older version. Many thanks irad