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Primavera MK304

Primavera MK304; Microphona Mikrofona (ID = 17131) Radio
Primavera MK304; Microphona Mikrofona (ID = 98630) Radio Primavera MK304; Microphona Mikrofona (ID = 98631) Radio
Primavera MK304; Microphona Mikrofona (ID = 98632) Radio Primavera MK304; Microphona Mikrofona (ID = 98633) Radio
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Primavera MK304; Microphona Mikrofona (ID = 98630) Radio
Microphona Mikrofona: Primavera MK304 [Radio] ID = 98630 698x700
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For model Primavera MK304, Microphona (Mikrofona), Bratri Knotkove, Praha-Strasnice
Country:  Czechoslovakia
Manufacturer / Brand:  Microphona (Mikrofona), Bratri Knotkove, Praha-Strasnice
alternative name
Telefony Microfona
Year: 1935/1936 Category: Broadcast Receiver - or past WW2 Tuner
Valves / Tubes 4: AF7 AC2 AL1 AZ1
Main principle TRF with regeneration; 2 AF stage(s)
Tuned circuits 1 AM circuit(s)
Wave bands Broadcast, Long Wave and Short Wave.
Power type and voltage Alternating Current supply (AC) / 120-240 Volt
Loudspeaker Electro Magnetic Dynamic LS (moving-coil with field excitation coil)
Power out
from Model: Primavera MK304 - Microphona Mikrofona, Bratri
Material Various materials
Shape Tablemodel, with any shape - general.
Dimensions (WHD) 340 x 345 x 210 mm / 13.4 x 13.6 x 8.3 inch
Notes Wooden case with bakelit front.
External source of data Erb
Source of data Ceskoslovenske prijimace 1933-1945, Baudys 1947

All listed radios etc. from Microphona (Mikrofona), Bratri Knotkove, Praha-Strasnice
Here you find 67 models, 49 with images and 44 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.