I'm working on tracking down some 2m repeater interference, and I have identified that the offending signal is a spur transmission on a commercial pager service (that lands right on our repeater input frequency).
How would I identify regulations that the commercial transmitter should be observing, to verify that their equipment is operating properly, or what are the regulations for a commercial transmitter? (For the purposes of this question, I'm located in the USA)
To measure the spur signal, I plan on using a spectrum analyzer to measure the relative magnitude from the fundamental frequency to the spur. I will use an antenna to observe the signal from off-site. Are there potential issues with this method?
I'm interested in this approach out of curiosity on whether this is a viable option, not because it is currently necessary.