My K3 was factory assembled last Feb. It just returned from having ATU and KRX3 installed. In the package was a KANT 3 PCB assembly wrapped in ESD bag along with small envelope, Part # E850339, TMP cable 12". Am I correct in assuming that this was 'plucked' from the K3 iot install either the ATU or KRX3? Inquiring minds, etc? 73 Tom CX7TT K3 #250