Hello, On my old KXV3 I installed a small PCB with sticky tape. It was an original Elecraft mod. As far as I know this mod was installed to improve isolation of the receive antenna on the original KXV3 board. Now I'm installing the KXV3A board I have the next question: Do I have to install this RXA mod pcb on the new KXV3A board? 73's, Evert PA2KW