I had a few frequencies I didn't want submitted to the online database but would like to have in the regular system file for my County so I started trying to figure out how this thing is managing the information stored in it.
It ended up being a simple series of text files. Example randomly plucked from the file:
C-Freq CFreqId=51636 CGroupId=13864 Ford County EMS Med 1 Off 463000000 FM TONE=C192.8 12
As you can see it's logically laid out and the number at the end corresponds to the service type.
I opened the file with Word Pad and searched for my local PD. I copied the line of text for the PD and then changed the frequency and edited the name. I then entered a different CFreqld number (just made up one that was not in the file) and it worked great.
I'm sure it will all be overwritten at the next database update but for now I have the channel in there I want without having to mess with the hassle of creating an entirely new Favorite List just for a few channels.
I can't understand why we don't have this full edit capability with Sentinel directly like the GRE software does.
I think they should at least provide it with the extreme upgrade option.
By the way, you have to have Windows setup to show hidden files to see the .hpd system file you want to work with.