Braun VHF Transceiver SE400
Additional CW Audiofilter for Braun SE400: CW audiofilter Braun SE400
Dataset LTSpice(7zip): Braun SE400_CW-Filter
My YT-videos about installation of this CW filter:
Part 1: https://youtu.be/zj3SxCFO-4Y
Part 2: https://youtu.be/5jWjhg2U2VU