Portland Police Dispatch - East Portland Police Bureau - East Precinct bounadries are roughly SE 39th Ave.(W), 162nd Ave.(E), I-84(N), and SE Clatsop St.(S)
I'm always in ScannerRadio's discord chat, #oregon channel for questions:
WA7ABU 145.2900 MHz Repeater The 145.290 Mhz repeater located in the Silverton hills serving the mid to north Willamette valley. Nets at 10am, noon, and 11pm every weekday. This repeater is very popular and quite busy throughout the day.
This is the WA7ABU repeater on 145.290 Mhz.