No. Different trunking systems can not be in the same system.
The reason the 'System - Site' column is grayed out is because you don't have any SQKs assigned to the sites.
There's two ways of doing what you want to do:
1. You could delete all the sites that you will never want to monitor. Don't delete any TGID groups. That way you don't have to mess with the SQKs.
- or -
2. Set the SQK on each site that is in your county. You could use the same SQK number so when you turn on a specific SQK, all the sites with the same number will turn on. On the sites that you don't want to monitor should be set to a different SQK so they will not scan all the time unless the SQK is on. To set the SQKs, go to the System tab then if the sites are not showing, expand the System. Click the Site node then assign the SQK on the right side.
Just watched a video from The Scanner Guys on using Quick Keys and I think I've just made myself more confused... at least in terms of how I'm looking at things through the lens of the ProScan software I'm using.
I see how to set a Group Quick Key, and I've done so, selecting each county's primary TGIDs and giving them the same group (so everything I want to hear in Hillsborough County is GQK 1, Tampa City is GQK2, Pinellas County is GQK3, etc... on through GQK 9.)
However I cannot for the life of me figure out how to assign System Quick Keys... At the system level I have an option to allow for the group quick keys that are assigned within that system to be toggled on/off, but nothing I do sets an SQK number within the SQK column. (And for Trunking purposes, is a "site" the same thing as the frequencies, which are separate from the TGIDs?)
Also, something that The Scanner Guys said that now has me wondering... all those groups that aren't assigned a GQK will scan by default... so do I need to assign everything that I don't want to scan on a regular basis to another GQK, maybe 0, so that they won't scan unless I enable 0?
I feel very lost, lol... and I'm not someone who usually gets lost with this stuff! Me-thinks I should just invest in the GPS receiver and be done with it.
Last question (for now)... As it stands now I'm scanning EVERYTHING I have loaded in there, and I've spent several hours out driving around with the scanner running. I'm receiving some things, but not most things that I expected to be receiving (for example, I'm getting NOTHING from Hillsborough county Fire or Sheriff's departments, other than the EMS ALS to Hospital frequencies). I found a separate listing on radioreference.com of known encrypted departments, and none of what I'm (trying) to listen to is listed as encrypted. Any ideas on why I wouldn't be picking it up? I would think with several hours in a place as big as Hillsborough County I'd hear at least some stuff (and I did used to hear quite a bit when I had the scanner in my shack and I would hook it up to my 2m/70cm dipole mounted 20' in the air). Now in my truck with a Tram scanner antenna mounted on the back window, I'm not getting any of that "good" stuff, just the boring junk.