Before restoration
The receiver after "modernising" around 1960
Back view of receiver with the power supply at the bottom
The chassis disassembled for painting
After restoration
Chassis
Repainted chassis with backplane and tuning unit
Back of chassis with tuning capacitors and side mountings
Modules
RF module 1 before and after restoration
RF module 2 before and after restoration
Oscillator/mixer module before and after restoration
AF module before and after restoration
Intermediate frequency module
BFO/detector/AF module
The valve RV12P2000 was used in all stages of the receiver except the power supply, 10 of them in all. The valve is a pentode for all frequencies from AF to VHF, it is only 48 mm high including the top connector! The photo is showing one valve with the Telefunken logo and RV12P2000 printed on the screening most valves had, and one valve with the text Wehrmachteigentum and the German eagle.
Alignment rig for mixer, IF and BFO/det/AF
All modules in the chassis for final test
The chassis seen from above
The coil systems with the mixer/oscillator coil screen removed
The case and front panel are still not painted
The receiver is restored in the first step! In step two the bands 1 and 5 will be restored, some more original components added and the case painted.
Two years later, summer 2009! Final restoration and checkout
The painted case with valve designations
New cover over the D/F circuit connector and new handles
Text for the head phones
Text for the main frequency trimmer
Screening of the oscillator/mixer module
Setup for final checkout with oscilloscope, voltmeter and signal generator with counter and damping network
My completely restored E52 Köln!!
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Updated October 27th 2009