Do the builders/owners of commercial communications towers there (be they cell phone towers, commercial radio towers, tv towers, etc.) rent space on their towers to other users? An example of what I'm talking about is a local radio station here lets our local ham club place and maintain our 2 meter repeater on their tower. Likewise I believe the Sheriff's Office and the county school system has their radio repeater on on of the commercial towers as do various other local dispatchers and cab companies.