I am the person who started this topic. A few hours later I could not log back in & had to register with Radio Reference a second time. I have one Favorites List with everything in it. I appended everything via Sentinel. Police are not encrypted att. I am able to listed to Cobb County PD and all the City PD's in the County no problem if I hold the TGID's, but scanning them does not work.
It appears that you have a problem with your sites.
I'm not sure how this happened, if you appended directly from the database. But your sites are incorrect. For the site you labeled as Cobb County, you have frequencies from several other sites on the system in the Cobb site. The first frequency, in your Cobb County, 851.1625, is actually a control channel frequency for the Jail Intellirepeater. Another frequency, in that site, is not from Cobb County, but is part of the Douglas County site. Frequency 855.0875, which you show in a site named Mableton, actually should be in the Cobb County Simulcast site. I find no site in your specific area named "Mableton". And for the site you named Atlanta, I'm not seeing several of those frequencies in the trunked systems in your county nor Fulton County.
The attached *.hpe file has the corrected sites, from the database, in a system labeled 'Cobb County P25 a'. Also in that file is the complete Cobb County file as it is shown in the database. If you want, set the full Cob County file to Avoid & see what you hear on the talkgroups from your original file, with corrected sites. Some of those sites, from counties other than Cobb, might either be out of range, or of no interest to you. Set them as Avoid or delete them once you're sure you are hearing what you are actually wanting to hear.