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: VarAC response to attempt to edit frequency drop-down list 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