Network tube radio receiver '' Latvia M-137 ''.
Tube radios.DomesticSince 1950, the network tube radio receiver "Latvia M-137" has been produced by the VEF Electrotechnical Plant. The 1st class radio receiver `` Latvia M-137 '' was created on the basis of the pre-war development receiver `` VEF-M-1357 ''. The radio receiver `` Latvia M-137 '' is assembled on 13 lamps 6K7, 6A7, 6A8, 6K7 (2), 6X6S, 6S5, 6N7S, 6P3S (2), 6E5S, 5TS4S (2). One of the features of the receiver is the scale, in which the sighting device is aligned with the range switch indicator. On any of the five bands, a light dot on a red background indicated the tuning frequency on the band of the selected band. When the pickup was turned on, it was extinguished. Ranges: DV - 150..410 kHz, SV - 520 ... 1500 kHz, KVI - 4.28 ... 8.57 MHz, KVII - 8.53 ... 12.2 MHz, KVIII - 15.07 ... 15.54 MHz. IF = 465 kHz. Sensitivity 50 μV. Selectivity on the adjacent channel 36 dB, on the mirror in the DV, SV 50 ... 60 dB, HF 26 dB. The output power on the 10GDP-VEF loudspeaker is 6 W. Audio frequency band 60 ... 6500 Hz. Power consumption 190 watts. Receiver dimensions 642x406x292 mm. Weight 30 kg.
