Thank you for the reply
Yes i do use sdrsharp audio output (48kHz) to feed MultiPSK and it works mostly well for some protocols depending on the demodulation mode i select.
for example, for VDLM2 and ORBCOMM i must set Modulation to RAW in SDR# and PSK in MultiPSK
However there's NO combination i managed to decode ACARS with using that set up.
any ideas on what to try for that?