for historical military technology

Communication equipment 1

The EK HF receiver.

Aircraft radio communication system FuG 10

The standard aircraft radio communication system FuG10 for all larger Luftwaffe aircraft is shown here as a 
complete, fully-interconnected and working
demonstration system

FuG 10

The complete, working FuG10 exhibit.

The FuG 10

MF and HF radiotelegraphy 

Flight crew intercommunication via
a built-in interphone

Air-to-air & air-to-ground HF radiotelephony (with modulator unit) 


In 1936-37, the firm of Lorenz AG* developed the aircraft radio system FuG 10 for the Luftwaffe.
Starting from 1939, it became the preferred equipment for larger aircraft with several crew members (e.g. Ju 88, He 111, DO 217, ME 110).

The  FuG 10 set was officially standardised. By the end of WW2, Lorenz AG and numerous licensees had built nearly 300,000 sets.

A typical airborne radio operator's position.

The photo (top right) and drawing (right) show the radio operator's position with all controls and equipment units.

Pictorial diagram of FuG10 installation.
Circuit breaker panel.

Circuit breakers






E = Receiver
S = Transmitter

L = MF (long-wave)
K = HF (short-wave)


EL = MF receiver 

Among these are:
Circuit breakers (power on/off, overload protection),
HF and MF transmitters and receivers  (EL - SL - EK - SK) - each with four preset frequencies,
Antenna remote-control box - radio set selection, antenna tuning (fixed or trailing-wire antenna), pay-out and and rewind of the electrically-powered  trailing-wire antenna (length 75 m),
Radio operator switchbox - central control unit for the crew headset/microphones plugged in to the system,
Radiotelephony unit for mode selection (telegraphy/telephony),
Morse key for radiotelegraphy, also used as press-to-talk key for radiotelephony.

Crew headset socket, with volume control and call key.
Other FuG10 Links:

Helge LA6NCA
SRS Technoday 98

EL (MF) and EK (HF) receivers.

Crew headset socket (above)

MF and HF Receivers  (left)

Radio operator switchbox.
Antenna remote-control box.

Antenna remote-control box (above)

Radio operator switchbox (right)

RG tube unit and interphone amplifier.

The interphone  amplifier is in the tube unit RG (left). Note nameplate.

Socket for external power feed to aircraft electrical system.

When operating or testing the radio equipment on the ground, an external battery must be connected to the "External Connection to Aircraft Electrical System" socket (right).

 FuG 10 System Specifications


Frequency range
Effective range

RF power output


DC power input

MF: 300-600 kHz, HF: 3000-6000 kHz
MF: 200-500 km
HF: 1000-2000 km
Telegraphy: 70 Watts
Telephony:   40 Watts
2 antennas: Fixed or trailing antenna, selectable at antenna remote control box. Trailing antenna is remote-controlled.
max. 800 Watts.

for historical military technology e.V.
Heinrich Diehl-Straße
90552 Roethenbach/P.
Tel   09120 9168
Fax   09120 181472

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Last updated: 09/25/2019
* Lorenz AG still exists today as Alcatel SEL, Stuttgart - a major telecom-equipment supplier.