Mainflingen longwave transmitter

The Mainflingen transmitter is a longwave broadcasting facility in Mainhausen near Frankfurt with several steel lattice masts standing between 150 and 200 meters tall. These masts support specialized antennas insulated from the ground that broadcast the longwave signal over vast distances.

The facility began transmitting in 1956 and underwent major upgrades in 1962 when transmission power was increased from 50 to 300 kilowatts. This increase allowed it to reach a wider area across Europe and provide more reliable coverage.

The facility broadcasts the DCF77 time signal that synchronizes countless radio-controlled clocks and watches across Central Europe. This invisible signal keeps time accurate in homes and offices throughout the region without anyone actively thinking about it.

The site is a secured facility near the A3 motorway with limited public access to operational areas. Visitors can view the masts from a distance, but should be aware that close approach to the active transmission equipment is not permitted.

A distinctive T-shaped antenna arrangement in the southeast area uses two separate guyed masts specifically designed to enhance signal distribution. This special configuration is why the transmitter achieves such reliable coverage across Europe.

Location: Mainhausen

Inception: 1950s

Part of: Mainflingen transmitters

GPS coordinates: 50.01593,9.01017

Latest update: December 14, 2025 14:43