[RC232] Are the modules full duplex ? Module is half duplex. Sent and receive but not at the same time. Last Update: August 8, 2017 February 3, 2017 2853 RC232 Q&A Related Knowledge Base Posts -[RC232] I want to know if you information about the transmission distance regarding the power RF level ?[RC232] I use a switching DC/DC regulator, will the ripple have a negative effect on the VCO in the radio?[RC232] When I connect RXEN and TXEN to VDD, instead of leaving open, the current consumption increases to 20, mA. When I send a character to the module over RS232, the current appears to be 134mA.