IDLE
Your area is quiet. The detector is seeing normal background RF levels with no meaningful mobile-style emergency services activity.
Coming soon for UK and EU neighbourhood awareness
Tetra Detect X1.
Know when Police or emergency services radio activity is close by or active in your neighbourhood. A professional proximity scanner that gives clear visual alerts when local TETRA police and emergency services mobile radio activity increases nearby.
Built for RTL-SDR V4 and designed for quick at-a-glance awareness: idle, activity, nearby, and very close. Passive detection only: no listening, recording, decoding, or access to protected communications.
Colour meanings.
Tetra Detect X1 turns complex RF activity into simple colour-coded warnings, so you can instantly understand whether your area is quiet, becoming active, or showing strong close-range emergency services radio activity.
ACTIVITY
Radio activity is waking up. Tetra Detect X1 is seeing activity above the normal baseline, giving you an early indication that the area is becoming active.
NEARBY
Activity is nearby. Stronger or more repeated mobile radio behaviour is present, making this the warning level people will want to watch closely.
VERY CLOSE
The highest alert level. Strong repeated activity has crossed the close-range threshold, suggesting police or emergency services radio activity is very close to your location.
Signal graph insight
Large red spikes appearing close together can indicate very close repeated RF activity. By watching the signal history graph, users may also see short rises and drop-offs as police or emergency services vehicles pass through or near the local area.
Know when Police or emergency services are close.
Designed for people who want a simple visual warning when TETRA police and emergency services radio activity increases in their neighbourhood.
Notify me
Why use it.
Built for people who want fast local awareness without learning SDR waterfalls, tuning workflows, or raw signal graphs.
Instant visual awareness
See the area state at a glance with colour-coded proximity levels and a live detector screen.
No radio expertise needed
The interface is designed to be readable without specialist SDR knowledge or manual waterfall interpretation.
Software or complete kit
Join for software-only updates or register interest in the complete RTL-SDR V4 dongle and antenna setup.
Know what is happening locally
Stay aware when police or emergency services radio activity increases around your village, estate, town, or neighbourhood.
Useful at home or on the move
Use it from a fixed location, vehicle, workshop, or temporary setup to understand how local RF activity changes around you.
Clear alerts without guesswork
Colour states, signal history, and optional audio alerts make proximity changes easier to notice without staring at raw SDR data.
UK Police Scanner detection software.
Choose the version that suits your setup. Public ordering is coming soon, so the buttons currently register your interest.
Software only
For users who already own compatible SDR hardware and want the detector app.
- Tetra Detect X1 software
- Range scan and proximity-style alert states
- Windows setup and configuration notes
Device + software kit
For users who want everything supplied together and ready to set up.
- Detector software package
- RTL-SDR V4 compatible dongle
- Antenna starter kit and setup guidance
Passive RF signal-awareness only. This product is not intended to decode encrypted TETRA, intercept private communications, record radio traffic, or help anyone interfere with emergency services. Users are responsible for complying with UK, EU, and local radio laws.
