An fsk file extension is related to the Atari 8-bit cassette image format.
There is one other file type using
the FSK file extension!
.fsk - FotoSketcher parameter preset
FSK file extension - Atari 8-bit cassette image
What is fsk file? How to open fsk files?
File type specification:
The fsk file extension is used for files tin text-based format that stores Atari tapes as sequences of MARK (logical 1) and SPACE (logical 0) signals.
These files are used by the A8CAS project.
This fsk file type entry was marked as obsolete and no longer supported file format.
This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.