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From the autumn of 1939, the radio network receiver lamp "R-2" was manufactured by the Moscow plant "Radiofront". Radio "R-2" - three-lamp, on lamps of metal series 6К7, 6Ф6 and 5Ц4, assembled according to the scheme of direct amplification 0-V-1 with limited feedback and intended for local reception with power from an alternating current network. The control is carried out by one handle, which gives a smooth tuning to the station and in its extreme positions switches to long and medium waves. For playing gramophone records in the receiver jacks are provided for the adapter. A loudspeaker with a permanent magnet is used in the receiver, which is supposed to be replaced by a speaker with external excitation. The frequency range of the receiver frequencies is wide enough and the sound quality is good. In 1939, the plant expects to release 200 receivers "R-2". Apparently afterwards the radio was nevertheless upgraded, since the image on the right is different from the above photos.