AGC Automotive 
March, 2026
Belgian innovation reaches a rail connectivity milestone: 50,000 windows treated with WAVETHRU™ Retrofit
Gosselies, Belgium | March 11, 2026 — Pulsaart by AGC, a Belgian innovation initiative within AGC Automotive Europe, today announces a major milestone for passenger connectivity in rail: 50,000 train windows have been treated with WAVETHRU™ Retrofit across Europe.
WAVETHRU™ Retrofit is a laser-based glazing treatment applied to existing train windows. The treatment makes coated glazing more permeable to mobile signals while preserving the window’s essential functions, including thermal insulation and optical performance. In operational deployments, the unique glass treatment increases mobile signal coverage inside the train car by up to 300 times, without altering the passenger’s view through the window. Performance is validated through pre- and post-treatment RF measurements, complemented by on-train quality checks.
The service is currently deployed with 10 rail companies across Europe, and Pulsaart by AGC is working with partners to expand deployments further. Some deployments remain confidential under customer agreements; Pulsaart by AGC therefore does not disclose customer names or deployment geographies for all programs.
While widely adopted in rail, AGC applies the same principle to other glazing environments where signal penetration is constrained, including buildings equipped with high-performance coated glass.
“Reaching 50,000 treated windows is a meaningful milestone for our team and a clear indicator of market adoption and customers trust. Over the last 4 years, we have reached a significant maturity level with continuous operation,” said Yvain Cornet, CEO of Pulsaart by AGC. “Rail operators want measurable improvements in onboard connectivity, but they cannot compromise on passenger comfort or window performance. WAVETHRU™ Retrofit delivers both while reducing costs compared to expensive window replacement. We value the trust of our partners across Europe and we remain focused on scaling deployments with additional rail companies in new countries.”
Milestone: 50,000 windows treated with WAVETHRU™ Retrofit
Deployment: 10 rail companies across Europe
Origin: Belgian innovation initiative within AGC Automotive Europe
Performance: Up to 300x increase in signal coverage inside the train car
Purpose: Improved mobile signal penetration through coated train glazing
Additional applications: Applicable to other coated glazing environments, including buildings
Deployment: 10 rail companies across Europe
Origin: Belgian innovation initiative within AGC Automotive Europe
Performance: Up to 300x increase in signal coverage inside the train car
Purpose: Improved mobile signal penetration through coated train glazing
Additional applications: Applicable to other coated glazing environments, including buildings
Denis ZENKIN | Marketing Communications Manager | Pulsaart by AGC (AGC Automotive Europe)
Email: denis.zenkin@agc.com | pulsaart.com/wavethru-retrofit
Many trains use glazing with thin metallic coatings to support thermal performance and passenger comfort. These coatings can attenuate radio signals, and when combined with the train’s metal structure, they can contribute to a “Faraday cage” effect that makes it more difficult for mobile signals to enter the carriage. The result is a familiar passenger experience: unstable connections, slow data, and dropped calls, even in areas with strong network coverage outside the train.
WAVETHRU™ Retrofit uses a precise laser treatment to locally modify the coating in a controlled pattern, supporting improved signal transmission through the glazing while maintaining key functional properties. This solution is validated by the major train operators in Europe.
Improved mobile signal penetration through coated train windows (up to 300x increase in onboard signal coverage)
Preservation of glazing thermal insulation and visual characteristics
Cost-efficient retrofit on existing fleets, avoiding full window replacement
Reduced need for onboard repeaters, lowering equipment, integration, and maintenance complexity
More sustainable approach, limiting waste and avoiding the footprint of recycling or replacing large volumes of glass
Scalable service model suitable for fleet-wide deployment
Pulsaart by AGC is a Belgian innovation initiative of AGC Automotive Europe addressing connectivity challenges in mobility markets including rail and automotive. Pulsaart develops and industrializes advanced solutions such as WAVETHRU™ Retrofit, as well as antenna integration technologies and antenna measurement services for mobility, aerospace and defense projects. Headquartered in Gosselies, Belgium, Pulsaart by AGC supports customers across Europe.
AGC Automotive Europe develops advanced glazing solutions for vehicle manufacturers, combining industrial expertise with innovation in comfort, design, sustainability, and connectivity. As part of AGC, a global leader in glass, chemicals, and other high-tech materials, AGC Automotive Europe supports mobility transformation through high-performance materials and technologies.
WAVETHRU™ is a trademark of AGC.
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