Bo-
It's possible to make a TK or TP module work in a J radio. It's just a matter of making a small adaptor board between the J input pins and the TK/TP output socket. You can remove the plastic cover from the smaller module, insert into the adaptor board and apply a piece of double-sided tape to the back of the new module. Remove the plastic case from the original module and push the outside half into place-Voila!