SideKar Extreme User Manual rev 2.1 Page 79 of 87
Appendix A: QRP Labs Classic QCX CAT Port
Here’s the schematic for the QCX CAT port required for QCX
Classic revs 1-5.
Revs 1-4 need all of the components
Rev 5 has the resistors and diode already installed.
You just need to add the 3.5mm connector
QCX+ and QCX Mini have the CAT port installed
already. Nothing further is needed.
NOTE: The QCX and QSX must always be connected to the
FT-Q port on the SideKar Extreme NOT the RS-232 port on
the top. QRPworks is not responsible for any damage to
the SideKar Extreme or the QCX if the wrong serial port is
used.
This schematic can also be found on our website at
. Click Support / Manuals and look under
the SideKar Extreme section.