It appears I do have the Limerick Paddles with the built-in PicoKeyer chip, but it appears to not be complete as it is missing the 3-volt battery coin holder. I did not know the size needed, I ordered one from Amazon for the CR 2032 as I have lots of those coin batteries lying around I use in my Tire Pressure monitoring sensors for my RV. The holder is cool but turns out to be 3x as big as the OEM part on the Limerick paddle, must be the rear tinier hearing aid size, oops. There are notes to do a mod hack to supply the voltage needed from an external source, but won't go that route until I exhaust my other sources. I still prefer my German paddles, but looks like a fun kit to share with the grand kids who practice sending their names when Poppi comes to visit.
David Knapp