December 19, 2017 Germany Launches Communication Satellite

On December 19, 2017, you can trace Germany's return to satellite communications after a 25-year gap with the launch of the Heinrich Hertz satellite. OHB System AG built it in Bremen to test over 20 next-generation technologies, including advanced antennas and inter-satellite links. It serves both civil and military missions, supporting Germany's information society and secure defense communications. There's much more to this spacecraft's significance than its launch date alone reveals.

Key Takeaways

• Germany launched the Heinrich Hertz satellite, its first dedicated communications satellite in over 25 years, marking a significant milestone in national space capabilities.
• Built by OHB System AG in Bremen, the satellite serves as a technology demonstrator rather than an operational communications service provider.
• The satellite carries over 20 experiments focusing on advanced antennas, high-frequency components, and inter-satellite links.
• Heinrich Hertz serves both Germany's Federal Ministry for Economic Affairs and the Federal Ministry of Defence, combining civil and military objectives.
• The launch ended Germany's reliance on foreign platforms for advanced in-orbit communication testing, strengthening its European space competitiveness.

What Is the Heinrich Hertz Satellite and Why It Matters?

Germany's Heinrich Hertz satellite isn't your typical communications satellite — it's a technology demonstrator designed to test and validate advanced satellite communication technologies in space, marking a significant milestone for the country's space sector. You can think of Heinrich Hertz as Germany's dedicated platform for pushing telecom boundaries, carrying over 20 experiments covering advanced antennas, high-frequency components, and inter-satellite links.

The satellite significance goes beyond the hardware itself. Built by OHB System AG in Bremen, it serves both civil and military communications objectives on behalf of the German Aerospace Center and two federal ministries. Rather than delivering an operational service, it's laying groundwork for future telecom architectures and secure communications infrastructure — positioning Germany as a serious player in next-generation satellite communications development.

The Technology Experiments Packed Into the Heinrich Hertz Payload

What makes Heinrich Hertz worth watching is what's actually packed inside it. The satellite carries over 20 experiments targeting real gaps in communications technology, and each one serves a specific purpose in technology validation for future missions.

You're looking at payload components that cover three main areas: advanced antennas, high-frequency components, and inter-satellite links. These aren't passive instruments—they're active tests designed to confirm whether next-generation telecom systems can perform reliably in geostationary orbit.

Germany isn't launching this satellite to provide a commercial service. It's launching it to learn. The data gathered from these experiments will directly shape how future secure communications infrastructure gets built, both for civil use and military applications. That's what separates Heinrich Hertz from a standard telecom satellite.

The Defense and Civil Missions This Satellite Was Built to Serve

Although Heinrich Hertz is a technology demonstrator at its core, it serves two distinct masters: Germany's Federal Ministry for Economic Affairs and Climate Action on the civil side, and the Federal Ministry of Defence on the military side. You can think of it as a shared testbed where both sectors validate technologies they'll rely on for years ahead. On the civil infrastructure side, the satellite supports Germany's information society by advancing future telecom architectures. On the defense applications side, it develops secure communications capabilities the military needs to operate reliably in contested environments. OHB System AG built the spacecraft in Bremen to satisfy both mandates simultaneously, which makes Heinrich Hertz unusual. It's not strictly commercial, and it's not strictly military — it's deliberately both.

How OHB System AG Built and Tested the Heinrich Hertz Spacecraft

OHB System AG handled every phase of the Heinrich Hertz spacecraft in Bremen, from manufacturing and testing through to launch preparation. You can see how their satellite manufacturing expertise shaped a mission built for both civil and military communications. Their testing processes ensured the payload's 20+ experiments were ready for geostationary orbit.

Here's what OHB managed directly:

1. Satellite manufacturing using Bremen-based facilities and engineering teams
2. Testing processes validating advanced antennas and high-frequency components
3. Inter-satellite link experiments integrated into the spacecraft payload
4. Launch preparation coordinated with Arianespace under the December 2017 contract

OHB's role wasn't limited to assembly. They carried full responsibility for delivering a verified, flight-ready spacecraft, reinforcing their standing as Germany's leading commercial satellite contractor.

Why Heinrich Hertz Ended Germany's 25-Year Telecom Satellite Gap

Before Heinrich Hertz, Germany hadn't operated a dedicated communications satellite of its own design in over 25 years. That gap in telecom history left Germany dependent on foreign platforms for advanced in-orbit communication testing. When OHB System AG completed Heinrich Hertz for DLR, it marked a decisive turning point in Germany's satellite development ambitions.

You can trace the shift partly to Hispasat 36W-1, launched in January 2017, which became the first telecommunications satellite designed, manufactured, and tested in Germany in more than two decades. Heinrich Hertz built on that momentum. Rather than simply closing a historical gap, it pushed Germany forward by demonstrating next-generation antenna technology, high-frequency components, and inter-satellite links — capabilities that position Germany competitively within Europe's evolving space communications landscape.