maybe im missing something i tried to make a motorola trunked system and im not able to enter any frequencies. also on my existing trunked systems my sites are missing and im not able to see the frequencies for those systems either.
I too have the same problem. I have my systems sorted by QuickKey and cannot access the site editor which contains the frequency info. However, when I changed the sort-menu to sort by name I can access the site editor. Hope this helps.