I was going to delete the post but figured I would post the solution in case anyone else has the same problem. Before I integrated the Navstax into the VC of the ? 310, I had messed around with the Navstax configurator. It appears I had the NAV 1 button checked off for each radio unit. It appears th...

Hi - I just purchased this product and have enabled it in the ? C-310 redux using P3Dv4. I am not able to use the NAV radios independently for some reason. If I switch the frequency, it changes both NAV 1 and NAV 2 and I cannot set a different NAV 2 frequency. The COM radios seem to work just fine. ...