• Country
• Czechoslovakia

• Manufacturer / Brand
• Iron-Radio, Ing. Galoda a Spol; Brno-Zidenice

• Year
• 1935

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 143382

Click on the schematic thumbnail to request the schematic as a free document.

• Number of Tubes
• 5

• Valves / Tubes
• CK1 CF3 CBC1 CL1 CY1

• Main principle
• Superheterodyne (common); ZF/IF 122 kHz; 2 AF stage(s)

• Tuned circuits
• 6 AM circuit(s)

• Wave bands
• Broadcast, Long Wave and Short Wave.

• Power type and voltage
• AC/DC-set / 110; 150; 220 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 16 cm = 6.3 inch

• Material
• Wooden case

• from Radiomuseum.org
• Model: Imposant 427U - Iron-Radio, Ing. Galoda a Spol

• Shape
• Tablemodel, high profile (upright - NOT Cathedral nor decorative).

• Dimensions (WHD)
• 360 x 430 x 270 mm / 14.2 x 16.9 x 10.6 inch

• Notes
• IRON Imposant 427U, has been produced in 1935 and 1936, it was only for AC supply having A series tubes 4V. Variant 427U was oldier, from 1935 for AC or DC power supply having C series tubes, filament current 200mA.

• Net weight (2.2 lb = 1 kg)
• 10.3 kg / 22 lb 11 oz (22.687 lb)

• Source of data
• - - Data from my own collection

• Author
• Model page created by Josef Smitka. See "Data change" for further contributors.

• Other Models

• Here you find 45 models, 26 with images and 28 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Iron-Radio, Ing. Galoda a Spol; Brno-Zidenice