I wondered why CW signals were muffled, when listening on the loudspeaker. I had AFX MD switched on "pitch". In a future firmware, a warning message " use phones" could prevent from doing this mistake. 72 de FO/F5LCI -- View this message in context: http://elecraft.365791.n2.nabble.com/AFX-MD-tp7560285.html Sent from the Elecraft mailing list archive at Nabble.com.