By default, SerialPort uses ASCIIEncoding to encode the characters. ASCIIEncoding encodes all characters greater then 127 as (char)63 or '?'. To support additional characters in that range, set Encoding to UTF8Encoding, UTF32Encoding, or UnicodeEncoding.
(hide) Do you keep losing on timeouts? Paying members can activate Automatic Vacation to automatically set vacation days when they would timeout. (pauloaguia) (show all tips)