Ukw. E. e (Ultrakurzwellen Empfänger e)
 

The Ukw. E. e is a radio receiver used mostly in tanks and in other armored vehicles. It operates in the frequency range of 27.2-33.3 MHz, or roughly the 10 meter band.

This is a superheterodyne receiver and a Telefunken product. Receiver chassis is contained in a strong case, and has a cover that clips to the front panel. There are no lugs or projections since mounting hardware is built into tanks. On top of the case are a pair of brass stripes for grounding purposes. Two cables provide the necessary connections between transmitter and receiver - one for sidetone, and the other for the antenna.

 
Specifications
 
FREQUENCY RANGE:
(Mo) 27.2 - 33.3 MHz. Dial graduation of the Ukw. E. e is in 50 kc intervals
NUMBER OF CRYSTALS:
PRESET FREQUENCIES:
2
ANTENNA:
6.5 foot rod (2 meter)
TUNING:(MO OR CRYSTAL)
MO or CRYSTAL
SENSITIVITY:
SELECTIVITY:
POWER SOURCE:
12-volt vehicular storage battery through dynamotor (Umformer) German type E.U. a2. Current drain from 12 volt battery 2.3 Amperes. Power requirements, Plates: 130 volts, 27 mA; Fillaments: 12.6 volts, 1.4 Amperes; Dial Lamp 12 volts, 0.14 Amperes
SIMILAR SETS :
Ukw. E. c, Ukw. E. d1, Ukw. E. f, also SCR-508(FM), SCR-608(FM).
POWER OUTPUT:(WATTS)
TUBES (TYPE and NUMBER):
7, all RV 12 P4000 , used as R-F amplifier, mixer, H-F oscillator, 1st I-F amplifier, 2nd I-F amplifier, detector and A-F amplifier. I-F frequency is 3 MHz; H-F oscillator frequency is 3 MHz below signal frequency.
USE:
These receivers are used in armored vehicles, in tanks for communication between tank company and tank battalion headquarters, and in stationary installations for short-range communication with marine stations. They can be used in nets with American amplitude-modulated radio sets within the frequency and distance range.
TYPE OF SIGNAL:
Tone and voice, amplitude modulated
RANGE: (MILES)
TO COMMUNICATE WITH:
Other tanks or armored vehicles.
TO REPLACE IN PART:
 

 
Front view of the receiver. The paint is in pristine condition

 

 
The manufacturing designation. Waffen Amt "B"

 

 
Controls

 

 
Headphone sockets.

 

 
Frequency scale.

 

 
Antenna connectors and connection to transmitter.

 

 
The first problem I saw when I opened it was a broken resistor. Not completely broken, but cap disconnected from the body. I used heat and pressure to reconnect them. Resistance measured correctly after that treatment.

 

 
Then a capacitor was broken off by the previous owner not opening case carefully enough. I substituted an equivalent Japanese capacitor and made it look close to original.

 

 
I substituted an equivalent Japanese capacitor and made it look close to original. I also painted it with the part number from the manual.

 

 
All of the vacuum tubes showed perfect health, as if this receiver has never been used. Just like the receiver, the vacuum tubes all are dated from 1941.

 

 

 

 

 

 

 

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