While what Jumbonk says about paging systems is true, its not gospel. Case in point, I had to troubleshoot an interference problem we were having with a nationwide paging company (sorry, the name escapes me but I think its Skytel) that has been deploying paging systems nationwide on an experimental PCS license (2Ghz) putting out massive amounts of power (2500w erp w/60mhz bandwidth).

From what I conlcuded, any receiver (from pcs down to cb band) within 100 ft was overloaded (anything higher than 2Gzh does not seem to be affected).

Like sswagerty says, get a spectrum analyzer and see what you have, its best to err on the cautious side.