The FuG 10 was a military transceiver that was used by Germany during WWII.
It was commonly used in large multiple crew member Luftwaffe aircraft such as the Heinkel He 111 and Junkers Ju 88 and the radio system is consists of four separate sets of transmitters and receivers. The first pair of which operated from 300 to 600 kHz longwave frequency and the second pair operated from 3 to 6 MHz shortwave frequency. The longwave frequency range on the device was around 250 to 500 meters while shortwave was 1,000 to 2,000 m.
These receiving sub-systems were designated EL and EK and the transmitting sub-systems designated SL and SK respectively. The FuG 10 required around 70 watts of power in order to operate. For protection, the radio components were all held within the solid steel box covering each of the receiver and transmitter sub-systems and also included in the set frame were Radio Operator controls and antenna controls.
The FuG 10 radio system was developed in 1936 by Lorenz. The FuG 10 saw great success in the role that it was put into of serving large aircraft by the end of the war, around 300,000 operational units had been made. Its reliability and ruggedness aboard the aircraft made it favored by aircraft crews. Reliability was key aboard any aircraft, especially when life and death situations in combat arose.