Total posts : 45366
As I read your quote of the rules pertaining to TIS I interpret the parts to be AND related and not OR related. Part (iii), in itself, seems to imply that the 10 watt limit is in lieu of the others, but the context of all four parts is inclusive, not exclusive, of each of the parts. In other words, my read is that the 10 watt limit needs to be followed in addition to the other three parts.
The TIS installations I previously referenced as using center loaded antennas are: One is for the city of my residence, two are for the Ohio Dept. of Transportation on the I-270 highway, and one is for the CMH airport. All have the center loaded antenna design and are mounted well above the earth. The transmitters can be seen to be at the lower end of the tower at eye level so they are probably radiating from the transmission line as well as their antennas.
My fair city’s antenna is mounted on a tower and I have received their signal at a distance of 20 miles Q5 (for those who don’t know, Q5 means perfectly understandable). This seems, by extrapolation, to violate the 2mV/m at 1.5 km rule unless the factory stock receiver in my truck is of exceptional sensitivity.
I am sure that my city purchased the system installed and plug and play, but I wonder if the installers even bothered to check the signal field strength.