This product is discontinued
Thanks to Jim Sheldon, W0EB, we have this circuit that eliminates the issue of the erratic keying when using a straight key attached to the uBITx, and improve the use of a mechanical paddle with the internal keyer. It is the pcb only. You supply the simple components for only the portions of the device you wish to use, straight key input, paddle inputs, or both, and mount internally in your uBITx chassis using #2 hardware. It uses FET switching to eliminate any issues related to mechanical contacts interacting with the inputs to the uBITx. The board is small, ~.58″ W x 1.62″ L. See the manual below for the complete BOM.