As pointed out by other's the BC 340CRS will not pick up the Fredericton Trunk Radio system.
Also as mentioned above, chech the Wiki for basic info on scanning.
However, if your looking at this model as a starter scanner it will pick up agencies in the
Fredericton area that are not Trunked.
Such as;
Aircraft
Ambulance NB
FIre Departments(other than Fredericton)
Department of Natrual Resources
RCMP
Bare in mind that over the next few years a new inter-provincal system will be going into service.
When that happens, you will need a one of the scanner models suggested by the other
members to listen to it.