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Is Your Dash Cam Killing Your Radio? The Truth About DAB+ in Australia
Is Your Dash Cam Killing Your Radio? The Truth About DAB+ in Australia
You install a premium dash cam, and suddenly your digital radio starts cutting out in places it never used to. As experts who live and breathe dash cam integration, here's why this happens and how to fix it.
The Problem: Electromagnetic Interference (EMI)
Most cars have the DAB+ antenna embedded directly into the rear window glass, sitting right alongside the heater demister lines. When you install a rear dash cam, you are placing a high-speed electronic device inches away from that sensitive antenna. The dash cam cable emits electromagnetic noise right next to the receiver - like someone shouting in a room where you're trying to hear a whisper.
Why Your Cable Choice Changes Everything
- The Coax Culprit: Some dash cam systems use coaxial cables which carry high-frequency signals. These can act like a broadcast antenna themselves, leaking EMI into your car's radio system.
- The USB-C Advantage: Many of our preferred systems use USB-C architecture. These cables are shielded differently and operate on different frequencies - significantly quieter in terms of electronic noise. This is often the secret sauce to maintaining radio clarity.
Expert Tips for the DIY Installer
- Mind the Gap: Even 5cm of separation between the camera lens and the antenna lines in the glass can make the difference.
- The 90-Degree Rule: If your dash cam power cable must cross a factory wiring loom, cross it at a 90-degree angle. Never run them parallel for long distances - this creates crosstalk.
- Ferrite Chokes: Clip a ferrite core onto the rear camera cable near the camera body to help choke the interference before it reaches your car's antenna.
- Route High, Not Low: Identify which side the factory antenna lead is on and route your dash cam cables down the opposite side of the vehicle.
The Bottom Line
A dash cam's primary job is to be your silent witness. You shouldn't have to choose between safety and your soundtrack. Still losing signal? We specialise in troublesome installs and RF interference mitigation. Contact us and we'll get it sorted.