Network tube radio receiver "ECHS-2".
Tube radios.DomesticSince the 1st quarter of 1931, the ECHS-2 network tube radio receiver has been produced by the Moscow Electrotechnical Plant "Moselectrik", later the Moscow Electromechanical Plant named after Sergo Ordzhonikidze. The "ECHS-2" radio receiver (Shielded, Four-lamp, Network, 2nd version) is one of the first domestic radio receivers powered from an alternating current network with a voltage of 110, 120 or 220 V on indirectly heated radio tubes. The receiver is built on a 1-V-2 regenerative direct amplification circuit with three loops and adjustable feedback. The range of received waves is 200 ... 2000 meters, divided into four sub-ranges. Receiver output power 0.8 ... 1 W. There is a possibility of playing gramophone records from an external electric playing device. More details about the model can be found in the documentation below. True, when reading, there is some inconsistency in the release dates and names.
