I have downloaded firmware revision 1.68. I am curious about what I see on the K3 display when I go to FW REVS in the CONFIG menu. VFO A scrolls as follows: uC 01.68 d1 01.53 d2 00.00 FL 00.00 dr 00.00 Why do I not see 1.37 in d2? What are FL and dr for? Inquiring minds would like to know. Thanks. Roy Morris W4WFB