Hello, I would send the decimal or hex equivalent of the character you would like to display such as:
HSEROUT ["AT+CKPD=",$22,"1",$22,13] This is the hex equivalent of (")
HSEROUT ["AT+CKPD=",34,"1",34,13] This is the decimal equivalent (")

Both of these statements would output a string looking simething like: AT+CKPD="1" with a carriage return.

HTH
Dave Purola,