155.4900 MHz appears to be an OSP frequency. I haven't found it listed anywhere and unfortunately I don't have good reception on it so it's hard to tell what's being said most of the time. I can at least tell they're using 12 Codes and it's law enforcement. The way the pitch sounds to me also makes me think it's OSP but I could be wrong. Has anyone else identified this and/or have a better reading of it?