Hi, Just installed MMTTY it is working fb on RX. I'm using FSK, but seem to be TX-ing reverse polarity. Everything is = decoding fine on RX. Is there a way I can reverse my TX polarity within MMTTY that does not = affect the RX side of things? 73 Dez --- StripMime Report -- processed MIME parts --- multipart/alternative text/plain (text body -- kept) text/html ---