.tbk file: how to open it on Windows

1 Windows app registers the .tbk extension. Install one of them to open the file with a double-click.

About the format

Format

Asymetrix Toolbook File

PRONOM identifier

fmt/470, fmt/1795

Format data: freedesktop.org shared-mime-info and PRONOM (The National Archives, UK).

• 
  Trusted QSL

  Open source libraries and utilities to support using digital signatures for Amateur radio QSL information

  Other licence 2.8.1 1.3K ↓

Related guide: Change the default app for a file type in Windows