E51-53 Kiste (original) (raw)

E51 - E53 Ersatzteilkiste

Ln 30723 (GAF* stock-number)

E51 bis 53 Ersatzteile (spare part box for the receiver types: E51 - E53)

Type E51 was code-named Leipzig (a long wave double super-heterodyne receiver), which never was produced, E52 is the well known K�ln E52 (Koeln) and the E53 is known Ulm which was actually employed, albeit, in lower quantities compared to the K�ln E52 (please remember, that the photo quality can be enhanced, by copying it onto your clipboard and then pasting it into a Word, WordPerfect or another program)

Consider for more details the Telefunken Catalogue of 1941, also known as: Luftboden-Programm

The two aluminium devices are spare vibrator units, when 12 volt operation was used. The tools are also shown on pictures of the K�ln restoration project. The 4 glass bulbs (type OB120/4) are especially meant for the microfilm projection system (filament placed off-centre towards the first projection lens). The label in the background gives the content of the spare-part box. The empty hole down the left-hand side vibrator should hold a spare motor (type Z30spez.) to the E52a - a1 - a2 tuning control. This means, that this box does belong to the so-called E52b versions, as these weren't fit with motor-controlled tuning. See alsoK�ln restoration project Part I (see photo 18) and K�ln restorationPart II(see photo 28)

Top view of the spare part box to the K�ln E52

The early receivers might all have had metal spare-part boxes, whereas later in the war cardboard boxes were used, sometimes fit with far less parts. This is understandable, why should you need, for instance, a full set of spare RV12P2000 valves*, as these are very reliable components, with a rather long life cycle? * notice that the K�ln employed 10 and the Ulm even 12 'P2000s'; note, that only one valve type throughout the entire receiver is used! (neglecting, of course, the power supply)

Acknowledgement: I have to thank my friend Richard Walker very much, for giving me this nice rare K�ln/Ulm spare-part box.

*GAF = German Air Force = Luftwaffe

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