Overview of City radio systems
http://www.concepts2ops.com/Channel%2016%20Presentation%20APCO.pdf - 9/22/2018 - this URL is no good and the report seems to have disappeared off of the Internet - the URL does not come up at archive.org either
http://www.concepts2ops.com/Channel%2016%20Presentation%20APCO.pdf - 9/22/2018 - this URL is no good and the report seems to have disappeared off of the Internet - the URL does not come up at archive.org either