469.225 is at mt budawang east of braidwood but is quite clear along lake george.On a recent trip to Canberra I was able to listen to country police on 468.850 down to about Mittagong then when I lost that I started scanning & picked them up again by changing to 468.025/468.125/468.300/469.400 (not necessarily in that order but ) then when I hit lake George I picked up Queenbyanne on 469.225.
468.025 is off mt cronin near captains flat, again quite clear along the lake.
469.400 is at isaccs ridge just se of woden and west of hume in the ACT, can be picked up as far north as Gearys gap but fades in and out till sutton rd.
the above channels are for channel Sierra
468.125 is at canyonleigh and at yass and forms part of channel W.
cheers