Installing a DAB+ antenna in a car

Why upgrade to a DAB+ Antenna for your car

When it comes to modern driving, sound quality makes a difference. That's why more and more drivers are switching to DAB+ (Digital Audio Broadcasting), the cutting-edge standard for digital radio on the road.

Unlike traditional FM transmissions, DAB+ delivers crystal-clear sound, free from static and interference, while offering access to a wider range of stations, including niche and thematic channels. But it’s not just about quality: it’s about efficiency. DAB+ uses less bandwidth and ensures greater signal stability, especially on long journeys or outside urban areas.

Installing a DAB+ car antenna, especially one with amplified technology, means equipping your vehicle with a receiver fit for the connected world we live in.

What Is DAB+ and why it’s the future of in-car Radio

DAB+ is a digital broadcasting standard that’s rapidly replacing old FM frequencies across Europe. Unlike FM radio, which sends continuous waves, DAB+ transmits in digital format—resulting in higher audio quality and more stable signal reception.

It’s a technology designed for drivers who want a richer, more modern in-car experience—whether you’re commuting in the city or exploring off the beaten path.

Benefits of DAB+ over FM and analog radio

The improvement is clear from the very first listen, but DAB+ advantages go far beyond just sound quality. That’s why both drivers and professional installers are increasingly choosing this technology. 

These are the key reasons to switch to DAB+:

• Superior audio quality: clean, high-definition sound without static or interference from tunnels, tall buildings or mountainous areas.
• More stations available: many niche and genre-specific channels are broadcast exclusively via DAB+, not on FM.
• Rich content: DAB+ supports metadata like song titles, traffic updates, news and weather info displayed directly on your car DAB+ receiver.
• Automatic tuning: no need to manually scroll through frequencies. The system automatically selects the best available stations.
• Signal stability at high speed: DAB+ ensures consistent audio even on long motorway journeys or in remote rural areas.

Whether you're navigating the city or driving cross-country, DAB+ brings clarity and convenience that FM just can’t match.

DAB+ reception in urban and rural areas

Signal coverage varies depending on geography, but DAB+ antennas still outperform FM in most conditions.

• In cities, where interference and frequency congestion are common, DAB+ offers clear and stable audio, even between skyscrapers or in tunnels.
• Outside cities, FM often loses signal or becomes unstable—while DAB+ stays reliable, especially when paired with an amplified car antenna.

Real-world listening, wherever you go:

• Urban driving: smooth reception on the move, more local stations, and no overlapping frequencies.
• Highways and mountains: continuous signal without manual retuning.
• Isolated zones: amplified DAB+ antennas can pick up stations even in weak signal areas where FM completely drops out.

DAB+ is designed to go the distance, making every journey a more connected and enjoyable experience.

 

Choosing the right DAB+ antenna for your car

DAB+ antennas come in different shapes and sizes, each designed to meet specific installation needs, vehicle types and signal conditions. The first choice is between internal and external antennas, but another key factor is whether the antenna is amplified, essential for difficult reception areas.

Internal vs external DAB+ antennas: pros and cons

When selecting a DAB+ antenna, the first decision involves its placement: inside or outside the vehicle. Each option has advantages and drawbacks depending on your car model, daily use, and local signal conditions.

Internal DAB+ antenna (usually adhesive on the windshield):

• Easy DIY installation—no drilling or invasive modifications
• Perfect for city cars, company vehicles or urban driving
• Can be affected by tinted windows, thermal glass or heavy rain
• Lower performance in remote or mountainous areas

External DAB+ antenna (roof or fender mounted):

• Best signal quality, even over long distances
• Greater stability at high speeds
• Requires more complex installation, often by a professional
• Visible on the exterior—may not suit everyone’s aesthetics

For frequent travellers or those driving through poor coverage areas, external antennas offer the best results. Internal options are ideal for quick, discreet urban setups.

When amplified DAB+ antennas make the difference

Amplified antennas include a built-in signal booster, enhancing audio quality and reducing dropouts, especially in areas with weak reception. They’re not always necessary, but they’re highly recommended in specific scenarios.

Choose an amplified antenna if:

• You often drive in rural, hilly or mountainous regions
• Your car has a coated or heat-insulating windshield
• You want to maximize audio quality with a premium aftermarket receiver
• You’re installing the antenna inside the car and need to compensate for signal loss

Keep in mind: even the best amplified DAB+ antenna will underperform if installed incorrectly. Proper cabling, clean grounding and correct power supply are crucial for optimal performance.

Is your car stereo compatible with DAB+?

Before buying a DAB+ antenna, it’s essential to check whether your car stereo supports digital radio. Not all head units come with built-in DAB+ functionality—especially older or entry-level models.

What to check before buying:

• Built-in DAB+ support: most recent aftermarket car stereos in the mid-to-high range already include a DAB+ input.
• External DAB+ adapters: for stereos without native support, you can use plug & play DAB+ receivers or modules to upgrade your system without replacing it entirely.
• Antenna connectors: identify the right plug type (e.g. SMB, FAKRA, DIN) for your stereo.
• Power supply for amplified antennas: make sure your system can deliver a stable 12V power source.
• Source selection menu: confirm that your stereo has a DAB+ source setting in its software interface.

 

How to install a DAB+ antenna on your car

Installing a DAB+ antenna is within reach for most car enthusiasts, but it requires attention to detail. A correct installation ensures maximum reception quality and prevents common issues like interference, buzzing, or weak signal.

What you need before you start

Before beginning the installation, make sure you have everything ready for a smooth, secure setup:

• Check stereo compatibility (built-in DAB+ or adapter required)
• Select your antenna type (internal windshield or external mount)
• Cables and connectors (often specific: SMB, FAKRA, etc.)
• Power supply if using an amplified antenna (usually 12V ignition feed)
• Clean mounting surface—especially for adhesive antennas

Also prepare your workspace with basic tools like screwdrivers, zip ties, electrical tape, and a multimeter. Always follow the manufacturer’s instructions.

 
Step-by-step installation guide (windshield, roof, fender)

Installation varies depending on antenna type. Here’s how to proceed with the three most common setups:

1. Windshield-mounted internal antenna. This is the simplest and most popular method:
   • Thoroughly clean the upper corner of the passenger-side windshield
   • Stick the antenna in place, ensuring the ground wire touches bare metal
   • Connect the signal cable to the DAB+ input of your head unit
   • If amplified, connect the power lead to a switched 12V source
2. Roof-mounted external antenna. A more complex setup, often recommended for professionals:
   • Remove the interior headliner panel
   • Unscrew the old FM antenna (if replacing it)
   • Mount the new DAB+/FM combo or dedicated DAB+ antenna
   • Route cables to the stereo, using splitters or adapters as needed
3. Fender or pillar-mounted antenna. Often used for compact external models:
   • Mount the antenna using an existing hole or bracket
   • Route the cable carefully into the cabin, avoiding damage or moisture exposure
   • Connect to the DAB+ receiver and power (if required)

No matter the method, avoid sharp bends in the cable and test reception before finalizing the install.

Connecting your DAB+ antenna and testing reception

Once the antenna is physically installed, it's time to connect it to your car stereo and check that everything works as expected.

Final connection steps:

1. Connect the signal cable to the DAB+ input on your head unit.
2. If you’re using an amplified antenna, connect its power wire to a 12V ignition-controlled source. Many stereos have a dedicated ANT POWER output for this.
3. Ensure the ground wire (if present) has solid contact with bare metal on the car body.

Run a reception test:

1. Turn on the stereo and select DAB+ mode
2. Launch a full station scan
3. Make sure the channel list populates correctly
4. Test reception in various locations (urban, highway, remote)

If you get very few stations or the signal is unstable:

1. Double-check all connections and ground points
2. Inspect cable routing for interference
3. Consider testing the system with a DAB signal tester or ask a professional for help

In some cases, using an RF tester can help identify reception issues more precisely—or you may want to consult a specialist installer for assistance.

In general, if you’re not confident or worry about damaging the system, it’s best to leave the installation to a professional.

 

Tips to improve DAB+ reception

Even with a properly installed antenna, DAB+ signal quality can still be affected by terrain, vehicle electronics or incorrect positioning. Here are key tips to help you get the best performance—especially on long journeys or in weak signal areas.

Optimal antenna placement

Antenna placement plays a critical role in reception quality. Even high-end models can underperform if mounted in the wrong spot.

For internal windshield antennas, the ideal location is the top corner of the passenger side. Avoid tinted or heat-insulated glass, as it can block signal.

For external antennas, the best spots are:

• roof (centered),
• front fender (passenger side)
• metal brackets isolated from electrical interference
• Avoid routing antenna cables near ECUs, LED wiring, or wiper motors, as these can introduce unwanted noise.

 
When to choose an amplified antenna

An amplified DAB+ antenna includes a built-in booster that strengthens weak signals, especially in areas with lots of obstacles or low coverage.

You should consider an amplified model if:

• You regularly drive in mountainous or rural areas
• Your windshield is shielded or coated
• You have a premium aftermarket stereo and want the best audio performance
• You’re using an internal antenna and want to compensate for signal loss

Just remember: amplification only works when the antenna is properly powered (typically 12V with ignition). Without stable power, it won’t function—or worse, it could introduce interference.

 
How to reduce signal issues and interference

Even with good gear, poor cable routing or installation errors can degrade your DAB+ experience. Follow these tips to prevent problems:

• Keep antenna cables away from high-voltage wires and electronic control units
• Avoid bending or pinching the cables during installation
• Ensure a clean ground contact for internal antennas (essential for signal clarity)
• Use a filtered and stable power supply for amplified models
• Avoid low-quality splitters, especially if sharing the antenna with FM radio

If problems persist, try testing the system in a strong-signal area. This helps identify whether the issue is with the setup or the location.

 

Choose the right DAB+ antenna with Macrom

Upgrading to a high-quality DAB+ antenna means transforming every drive into an immersive, interference-free audio experience.

Macrom offers a carefully curated selection of DAB+ antennas for cars, designed for maximum compatibility, easy installation, and top performance in all conditions.

From quick-install internal antennas to advanced amplified external models for long-distance travel, every product is built to ensure stable and crystal-clear digital radio reception.

Discover the full range in our shop and enjoy the future of in-car audio, powered by Macrom.