one more thing im new to scanning i pick this up 851.9625 851.175 851.65 851.675 i no there police and sometimes bus but win i look them up they come up city of plano but plano allen and some others are on the Project 25 Motorola X2-TDMA so if this is plano how can i pick them up and here them??
Those frequencies are part of the
PAWM trunked system (Plano, Allen, Wylie, & Murphy). To receive that system, you would need a digital scanner, capable of trunk tracking a P25 system.
Current models include:
Make....................Model.................Type
GRE......................PSR-500............Handheld
GRE......................PSR-600............Base/Mobile
GRE......................PSR-800............Handheld
Radio Shack.......PRO-18..............Handheld
Radio Shack.......PRO-106............Handheld
Radio Shack.......PRO-197............Base/Mobile
Uniden.................BCD396T...........Handheld
Uniden.................BCD396XT.........Handheld
Uniden.................BCD996T...........Base/Mobile
Uniden.................BCD996XT.........Base/Mobile
Uniden.................HomePatrol-1....Base/Mobile
Since you're new to scanning, start with
this article from the Wiki. For a basic explanation of how a trunked system works, see this
one.