[RC232] “Please confirm that: RC1180/1140 and 1190 have exactly the same foot print/pin out… The goal being to have only one PCB and the same print for the 3 modules. “ The fooprint and the software is exactly the same on these modules. Last Update: November 9, 2017 November 9, 2017 2739 RC232 Q&A Related Knowledge Base Posts -[RC232] “We enable the RTS/CTS option in the DK and we send message longer than 128 bytes (the max buffer size) so we need the CTS to separated the massage. We test this with scope: 1. In the CTS we didn’t see change (I suppose all 128 bytes it needs to change) 2. Also in the Tx/Rx I suppose to see a break in the 128 bytes, but it takes all the massage 3. When I try connect this module to PC, only message shorter than 1024 bytes success to send “[RC232] When there is message collision, will the CRC check fail? How do we enable CRC checking?[RC232] In your schematic i can see four connections on the RF Antenna port, A66 0 Ohm Resistor to a LGA Pad, L-Bead to Connector P6, Resistor to UFL Connector P3 ,Resistor to hole. Which of them are necessary for the antenna?