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Rohde & Schwarz makes test and measurement gear and secure communications systems for industry, government and military customers.
Rohde & Schwarz builds the gear that proves wireless things actually work. If a phone maker, chip designer, car company or satellite operator needs to know whether a radio signal is clean, strong and legal, they buy a machine from this Munich-based company and point it at their product. It also sells secure communications and cybersecurity systems, mostly to governments and militaries that need to talk without anyone listening in.
The test and measurement business is the heart of it. The company makes spectrum analyzers that show what a signal looks like, signal generators that produce test signals, and network analyzers that check how components behave at high frequencies. These are pricey instruments sold to engineers, and customers pay for accuracy and trust: a measurement is only useful if you believe the number on the screen. That reputation, built over decades, is why the same brand shows up in labs from smartphone makers to defense contractors. The secure communications side sells encrypted radios and networks, largely to public authorities and armed forces, which makes it a quieter but stickier business tied to government budgets. Rohde & Schwarz is privately held, owned by the founding family through a holding structure, so it does not answer to public shareholders or report quarterly earnings like a listed rival such as Keysight Technologies. That freedom lets it invest for the long term, and it has used acquisitions to broaden its reach, including buying the Swiss cybersecurity firm AdNovum in recent years and building up its mobile network testing arm. It also runs a sizable broadcasting business, selling transmitters and equipment that keep radio and TV signals on the air, and it has pushed into areas like quantum sensing and automotive radar testing as new radio technologies spread.
Its main vulnerability is that its customers are careful spenders. Telecom operators and chipmakers cut capital budgets in downturns, and government defense spending moves with politics and budgets rather than consumer demand. Still, the mix helps: when commercial testing slows, military and security demand often holds up, and vice versa. For a private German company that started in a Leipzig laboratory in the 1930s, the formula has been remarkably durable: sell the instruments other engineers cannot easily replace, and keep the ownership in friendly hands.
Saved answer · last researched 15 Nov 2026