For Perth Town Police, I believe Alinco Markets a scanner that can uninvert voice inversion audio, which Perth Police Use. Make sure u order the scanner with that option available on it, some have it with it not available.
There is a program for the computer that will uninvert a voice inversion. If u private msg and are interested, i can email u a copy of this program, and how to use it. Its quite simple, but only good for one use of unscrambling voice inversion and that is it.
The following Towns which probably u can recieve from your area use voice inversion at the same audio invert frequency. The radio provider for these frequencies is Time/MCI.
Brockville police 142.935
Perth police 142.125
Smiths Falls police 142.305
Gananoque police 142.635
As for fleetnet you will require a Digital Trunking Scanner the can monitor P25 traffic For OPP, other uses on fleetnet such has MOH, and MTO use analog currently (possibly subject to change). The closest tower to Perth being the Drummond Fleetnet Tower. The Radio Provider for these is Bell Mobility Radio.
If u have an old scanner handy, u can monitor the VR02 repeater. 410.8625 mhz. The OPP perth detachment being right in town on Hwy 7, would give great opportunity to hearing the action in Lanark County as usually they always have one car parked in the sally port with their repeater on, you will here them as 3Nxx units. Sometimes they are patched in with Ottawa Traffic Units (OPP hwy 417) and leeds county units on the same talk group. As i remember driving through that town, the only other beat repeater close to your area, would be further up hwy 7, in Carleton Place which has an average radius range of 10 km.