Are the 8NCTAC frequencies paired with a repeater like the national 8TAC channels are. I have a public safety portable with those channels on it and when you key up it shows the input frequencies beginning with 815.
Last impression that I got was the 8NCTACs were no longer valid and being removed from codeplugs as updates were made.
The 4 700mhz direct frequencies (769.00625, 769.01875, 769.03125, 769.04375) are where most of the simplex action is at. Make sure to leave them on NAC search since each county/Agency has their own set of NAC’s.