I believe they went P25 digital on the same frequency. I'll take a listen and see if I can hear them from here.
What scanner do you have? If it's digital capable, you might want to try putting that frequency in as P25. Even though it's the same frequency, if you had tone programmed on your radio, you wouldn't hear the digital noise.
SPD/SFD signal's stink outside the city. Always have. You pretty much have to be halfway up central ave in Colonie or past exit 24 almost to 25 on the thruway to hear them. Schenectady County Sheriff on the other hand bombs in all the way down towards Ravena