[TrunkCom] can we decode encryption?

[Jimmykitw at aol.com]

Hello Friemds
I recently moved to a town in New Jersey that uses a 506-507 Mhz Motorola  
Type II smart net trunked system with encryption.
I have a trunking scanner but i can not listen to the police and fire  
department because I think they are using encryption.
Does anyone out there know if there is a software or scanner that can  
descramble the encryption??
Please help me.
Thank you
Jim in NJ,USA