siloam springs

Having lived in Siloam Springs for a number of years, and driving through several times a month, I have noticed that I am no longer able to receive police or fire transmissions from them. Have they changed frequencies, or have they gone to a digital format? Any help would be greatly appreciated.

Trying to locate frequencies for ALL Siloam Springs Public Safety services...seems they have either changed frequencies, or may have gone APCO. Any and all help appreciated.