The center position, Empfänger Ein (receiver on) Sender Vorheizen (transmitter pre-heat), is required because you do not want to apply anode voltage to the transmitter power amplifier tubes without having first applied power to the heater filaments of those tubes for about a minute.

Many thanks to Frank Doerenberg for this information.

Photo by Bruce Culp

Photo by kind permission of the German Naval Association

The "Sender Energie" knob is for transmitter power, either as a modulation-level control (volume control for the audio input) or to vary the anode voltage.

Many thanks to Frank Doerenberg for this information.

Photo by Bruce Culp

Photo by kind permission of the German Naval Association

* The EBG operated on 220 volts A/C.

* The EBG was supplied in two versions:

    Version 1: For ship stations with rheostat control resistor for transmitting energy (ours)

    Version 2: For ashore stations with a switch for remoting special energy controller

* Size: Height = 510 mm, width = 190 mm, depth = 205 mm

* Weight: 10.6 kilograms

* Manufacturer: Lorenz