Maybe. Mine is Nav.1 = 1, 0, 1. The rest looks like what I have...Don
Thanks Don, finally figured it out, the difference in Nav.1 setting wasn't the answer. My problem was that I was setting Nav1 whilst sat on the runway on dry land, taking off heading to sea, then calling up aicarriers to cause the Enterprise to appear 10 miles ahead. When I did these operations in reverse, ie magic up the carrier, before tuning the Nav1, then the tacan works fine, shows position and distance. Of course retuning the Nav1 after the carrier appears also works fine.
David
