Daniel R Keery

WARNING: SUPER GUESSING HERE every error is caused by AT+FRH=3 which it seems as "AT+FRH=3\r" command. It seems it has something to do with carriage return + newline \r\n. Looks like \r is being treated as \n possibly and then the \n is being seen as a new [empty] line. Not sure this would cause everything jto fail though,, although it might negate the AT+FRH command which specifcally sets the modulation for reciefved data frames to v21 channel 2 to not process. It seems this command should return...