“Tonne” / “Seedorf” facility

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Remote control camera ton
Recipient Seedorf

The combination Tonne / Seedorf was a German development during the Second World War for the guidance of Henschel-Hs-293 glide bombs with a television seeker head and a transmitter (" Tonne ") on board the guided bomb and a sighting device (" Seedorf") in the carrier aircraft.

meaning

With the system it was possible for the first time that the bomber turned away after the weapon was dropped without having to continue to observe the target or even to fly over it. Since the Hs 293 was primarily intended to combat ships, the carrier aircraft no longer had to expose itself to the air defense of the attacked ship, as was the case with the Fritz X , for example .

technology

The system consisted of a television camera in the bow of the Hs 293D glide bomb, with which images of the target were transmitted via a VHF transmitter to the image receiver in the guided aircraft, which could be used by the bombardier for target control. The most important part of the television camera was a compact image pickup tube (super iconoscope). It converted the optical image supplied by a lens into electrical signals with which the transmitter built into the bomb was modulated and the RF signal was sent to an amplifier with an antenna for radiation .

In the carrier aircraft, the gunner observed the monitor on which the image captured by the camera in the steering body was reassembled into a television image.

The bomb was steered with the usual control of the Hs 293, consisting of a transmitter (FuG 203) with the code name ("Kehl") in the aircraft and the "Strasbourg" receiver (FuG 230) in the glide bomb.

The combination of transmitter, transmitter power amplifier and TV receiver was only built and tested in small numbers (~ 300) by “ Fernseh GmbH ” ( Bosch ). A set of equipment, probably assembled shortly after the war in Bosch's training workshop from still existing parts, can be viewed in the German Museum of Technology in Berlin .

literature