In 1901 Alexanderson went to America and became an employee of General Electric. here he made many important electrotechnical inventions, including a single-phase motor for locomotives and rail cars.

Of a much greater importance was Alexanderson's work in radio engineering. From 1904 he worked with development of high-frequency alternators for long wave radio communications (up to 100 kHz). This type of radio transmitter was widely used for transatlantic radio communications during and after World War I.

Within many areas of radio technique Alexanderson´s inventions were of great importance and use. Just a few examples; he developed altitude meters and landing systems for aeroplanes. He was the first that was able to send pictures on short wave over the Atlantic and he made valuable contributions to the television technology development. In 1955 he was granted a patent on a new type of receiver for colour television. Alexanderson patented totally 344 inventions and designs, most of them made for General Electric.

The historic installation
Of the some twenty 200-kilowatt Alexanderson transmitters which were built in USA by General Electric and were installed all over the world, only this one at Grimeton is left. The uniqueness of Grimeton is the entirety, almost everything that was built in the 1920s is still there. Besides the transmitter, still possible to run today, the visitor can find the well preserved buildings, the world unique antennas and the little ”radio village”.

Even the old station truck, a well polished Chevrolet from 1931, is still in running condition. Another item is the petrol pump from Gulf, which can be seen in the station yard.