Notes about the LCT file extension:
Incorrect file associations could be the result of underlying issues within your PC system. As such it is highly recommended to scan your PC for invalid registry entries, unused processes and other unfavourable system settings to identify slowdown issues.
The LCT file type is primarily associated with 'Elsie' by Tonne Software. Elsie is a lumped-element ("L-C") electrical filter design and network analysis program, directed toward the engineer or technician involved in that line of work.