How do you pick up the police on a psr 250 scanner?

To pick up police frequencies on a PSR 250 scanner, first ensure the scanner is in "Scan" mode. You can program the scanner with local police frequencies by entering them manually or by using a computer to upload them if you have the necessary software. Make sure to set the appropriate trunking options if your local police use a trunked radio system. Finally, adjust the squelch and volume settings for optimal reception.