I'm attempting to add another frequency to the drop-down list to support an EmComm drill. This is a new procedure to me and I'm not familiar with it. I can't find a good description in the User Manual nor in the discussion here. I've read a vague comment about modifying the list using a text editor, but that isn't helping.
Problem: When I select Settings/Edit Frequency Drop-down List, VarAC launches Adobe Acrobat Reader and I get the response below:

I'm running VarAC ver 10.4.3 and VARA 4.8.9 on a Windows 10 computer. I noticed that the VarAC_frequencies.conf file seems to be missing from the VarAC folder, and exists only as a backup file.

Do I need to somehow recreate the VarAC-frequencies.conf file?
Mike W4BZM
At some point you instructed your Windows machine to open *.conf files with adobe reader. you can undo this in the windows settings. You can also work around it by going to the VarAC directory, right click the file you want to edit and select "Choose a program" or "Open with.... Notepad"
73s!
Irad