Upgrade the the firmware and database on your pc, disconnect, enter your zip code and go. Not really that complicated. You can also go into the menu and select the services you want to monitor and set the range in miles.
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So, I've had my 436 for about 5 days and I'm very happy with my purchase. I've pretty much experimented in the way you suggested. Turning on and off certain services to narrow my scanning to only certain things within my county. Also holding departments of interest for a while and experimenting with the range at times.
Today I was playing around picking up schools district/bus company traffic regularly from 16 miles away and a couple times from 24 miles away. My next step will be to work on a few favorites lists.
Even though I don't travel or want to record, having the database already on board is really great for playing with the service types without having to mess with Freescan as would be needed for the P2 series. I feel kind of silly for waiting so long to buy one.