Beginner’s Guide to Police Scanners

Apps vs. radios, analog vs. digital, trunking, and safe listening

Curious about police scanners but not sure where to start? You’re not alone. With modern digital systems, multiple frequency bands, and legal considerations, scanners can seem overwhelming for beginners. This guide will walk you through the basics of setting up your first scanner and listening responsibly.

1. Understanding Police Scanners

A police scanner is a radio receiver that picks up public safety transmissions, such as police, fire, EMS, and weather alerts. Some scanners are handheld devices, while others are software-based or streamed online through providers like Broadcastify.

Today, most agencies use digital trunked systems, which require scanners that can follow conversations across multiple frequencies. For beginners, online streams (like those on this site) are the easiest way to start.

2. Choosing Your Setup

3. Checking Local Laws

Laws about scanner use vary by state. In Wisconsin, listening at home is legal, but using a scanner while driving may require a permit. Always check your local scanner laws before you buy or use equipment.

4. Programming Your Scanner

If you purchase a hardware scanner, you’ll need to program it with the correct frequencies. This can be done manually or via software like Sentinel. Many scanner models come preloaded with nationwide frequency databases, but updating them regularly ensures you don’t miss changes.

5. Listening Responsibly

6. Tips for Beginners

- Start with your city’s main police and fire dispatch channels.
- Keep a notebook of common codes or download a 10-codes reference.
- If you hear silence, don’t worry — it often means call volume is low or encrypted channels are in use.

Conclusion

Getting into police scanners doesn’t have to be difficult. Whether you listen through an online stream, an app, or a handheld device, the key is to start small, stay patient, and listen responsibly. Over time, you’ll learn the patterns of your local agencies and gain a unique window into how public safety works.