"Ural-57"
(radiogramophone)
Set Of Tubes:
6A7, 6K3, 6G2, 6P3S, 6E5S, 5Z4S.
Schematic
diagram here
BASIC TECHNICAL DATA
Frequency Range.............................................................LW 150-410 KHz (2000-732 m)
MW 520-1600 KHz (577-187 m)
SWI 3,95-7,5 MHz (76-40 m)
SWII 9,5-12,1 MHz (31-24,9 m)Intermediate Frequency........................................................................................ 465 KHz
Sensitivity, less than........................................................LW,MW 200 mkV, SW 300 mkV
Reception Selectivity (frequency deviation +/-10 KHz), not less than (LW, MW)........26 dB
Second Channel Suppression, not less than ..................LW 36 dB, MW 32 dB, SW 12 dB
Power Output (total distortion 7%)............................................................................1,5 W
Audio Frequency Response...........................................................................100-4000 Hz
Power Consumption..........................................................................receivimg mode 80 W
gramophone mode 110 WDimensions................................................................................................... 549õ393õ310
Weight.......................................................................................................................24 Kg