If you look back at some of the issues of this magazine from the last decade, you'll see a lot of discussion about communications interoperability . The primary concern at the time was finding a way for different public safety agencies to communicate over the radio with each other at critical incidents such as active shooters and terror attacks. Such concerns about public safety communications during critical incidents and especially during the 9/11 attacks led to proposals for establishing a dedicated public safety communications network.
The radio frequencies for a public safety network became available about 10 years ago when all American TV channels were transitioned to digital signals from analog signals. Much of that spectrum went to other uses, but one band was set aside for public safety use.









