Old steam locomotive.

TimeWinder event using GroupTalk PTT

TimeWinder is one of Denmark’s most unique nostalgia events, bringing the period between 1875 and 1975 back to life. Visitors can experience vintage cars, antique tools, historic aircrafts, traditional clothing, and music that transports them through time. Behind the scenes, however, TimeWinder relies on modern communication technology — the GroupTalk Push-to-Talk (PTT) service — to make sure everything runs smoothly.

For the third consecutive year, TimeWinder’s organizers and volunteers have used GroupTalk to coordinate teams, share updates, and handle incidents instantly. With just a single press of a button on their smartphones, volunteers across the large festival area can connect and communicate in real time. The result: efficient operations, improved safety, and a seamless experience for visitors.

The event is entirely run by volunteers, from garbage collectors to team leaders and coordinators. GroupTalk helps them stay connected and organized throughout the event, creating a reliable communication network that allows everyone to focus on what matters most — offering visitors an unforgettable journey through history.

Two old cars racing against each other.

Walkie talkie app for safer events

Large-scale events depend on instant, clear, and secure communication. GroupTalk’s Push-to-Talk app enables staff and volunteers to communicate within dedicated talk groups, allowing quick coordination for everything from logistics to emergency response. Unlike traditional radios, GroupTalk runs on existing smartphones, making it an affordable and flexible communication solution for event organizers.

At TimeWinder, GroupTalk’s group-based communication ensures that every team member — whether managing parking, visitor safety, or performance coordination — can stay informed and react fast to any situation. This not only streamlines workflows but also enhances the overall safety and visitor experience.

Visitors who attend TimeWinder can expect a living time capsule — an experience filled with mechanical wonders, cultural displays, and historical authenticity. And while TimeWinder may stop time for its audience, GroupTalk keeps communication flowing, ensuring the magic behind the scenes stays perfectly in sync.