• Country
• Czechoslovakia

• Manufacturer / Brand
• REL, Electrum; Brno

• Year
• 1947/1948

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 72643

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

• Number of Tubes
• 5

• Valves / Tubes
• ECH21 ECH21 EBL21 AZ11 EM11

• Main principle
• Superheterodyne (common); ZF/IF 468 kHz

• Tuned circuits
• 6 AM circuit(s)

• Wave bands
• Broadcast, Long Wave and 2 x Short Wave.

• Power type and voltage
• Alternating Current supply (AC) / 110-240 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 20 cm = 7.9 inch

• Power out
• 2.6 W (unknown quality)

• Material
• Wooden case

• from Radiomuseum.org
• Model: Signal - REL, Electrum; Brno

• Shape
• Tablemodel, with any shape - general.

• Dimensions (WHD)
• 488 x 318 x 250 mm / 19.2 x 12.5 x 9.8 inch

• Notes
• 1) Basic installation is ECH21, ECH21, EBL21, EM11 and AZ11. But part of the serie was fitted with vacuum tubes ECH4, ECH4, EBL1, EM4 and AZ11.Rarely, may occur as well as various combinations of these tubes. 2.) Manufacturer REL (ELECTRUM s.r.o. Brno, later TESLA n.p. Brno

• Net weight (2.2 lb = 1 kg)
• 11.4 kg / 25 lb 1.8 oz (25.11 lb)

• Mentioned in
• Ceskoslovenske Rozhlasove a Televizni Prijimace I a II

• Author
• Model page created by Gabriel Toth. See "Data change" for further contributors.

• Other Models

• Here you find 49 models, 28 with images and 35 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from REL, Electrum; Brno