Tesla 3101B

Year of manufacture: 1953/54
Manufacturer: Tesla Prague-Hloubětín, Bratislava
Tubes used: 1R5T, 3x 1T4T, 1S5T, 3L31
Wave bands: long wave, medium wave, short wave 19,4 - 50,4 m
Description:

Briefcase-sized radio with modern heptal tubes, battery saving switch, a built-in frame antenna and batteries. 90 V anode battery, 1,4 V heater cell. 1,8 W power consumption, 120 mW output power, 50 mW during battery saving operation.