The tower used to be part of the analog VHF system used by Loveland Fire & Rescue Department, Loveland Rural Fire Protection District, and Thompson Valley EMS however long ago that was. From the looks of it, they operated a simplex communications system with each station having its own base station. It appears that the tower is no longer used as they have either cancelled the licenses or removed the location from their licenses by 2013.
The related FCC licenses were
KVZ740,
KNGD726, and
KNIK333.