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Tuning the shortwave in an Swiss Autophon E-39 military radio receiver.
Mar 20, 2025
The E-600 is one of the rarest military radio receivers ever built. Only 99 units were produced between 1938 and 1939, on the eve of World War II, when Switzerland decided to modernize its army in response to the escalating international situation. Manufactured by Autophon AG, a company based in Solothurn, Switzerland, this receiver stands out for its exceptional stability and selectivity, essential for intelligence operations and weak signal monitoring.
One of the most remarkable features of the E-600 is its tuning mechanism, inspired by the one used in the National HRO receiver, considered one of the best high-frequency receivers of its time. Autophon purchased 99 of these mechanisms to integrate them into its own receivers. Like the HRO, the E-600 uses a plug-in coil system housed in small drawers, allowing for precise and flexible band switching.
I found this particular unit in Granada, Spain. It once belonged to a German collector who moved to Spain years ago and passed away recently. I feel proud to have rescued and restored it to working condition after a meticulous restoration process.
The E-600 is a true achievement of Swiss engineering. Its modular design and robust construction reflect the level of excellence Switzerland applied to its military equipment. Today, finding one in working condition is nearly impossible, making this piece even more special.
I hope you enjoy the video and this Swiss military radio gem. Don’t forget to share your thoughts in the comments!
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