How to Make a $19 Police Scanner <br /><br />Overview<br /><br />In this guide I will explain how to build an inexpensive SDR (software defined radio) that can be used to receive police, fire, taxi, and other digital radio transmissions. I will do my best to explain the steps in detail, and provide further resources to help along the way.<br /><br />I have to give a lot of credit to the creator of the following guide: http://public-xrp.s3.amazonaws.com/docs/ How to Make a $19 Police ScannerOverviewIn this guide I will explain how to build an inexpensive SDR (software defined radio) that can be used to receive police, fire, taxi, and other digital radio transmissions. I will do my best t… Read more » 16 Oct 2013