On DTRS, it means Transportation Technology Center as seen in the description and not related to MetCom. It is located in Pueblo County, but put under the statewide Miscellaneous talkgroup section.
Thank you. I was entering all Fire & EMS into my TRX1 and as you can see in the screenshot it is listed as
TTC Fire Disp. (Talkgroup 4306). I also found the TAC talkgroup under Misc. in DTRS. The Whistler EZ Scan
does a terrible job getting information from Radio Reference.