• Country
• Czechoslovakia

• Manufacturer / Brand
• REL, Electrum; Brno

• Year
• 1936 ??

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 88105

• Number of Tubes
• 4

• Valves / Tubes
• AF7 AC2 AL4 AZ1

• Main principle
• TRF with regeneration

• Wave bands
• Broadcast (MW) and Long Wave.

• Power type and voltage
• Alternating Current supply (AC) / 110-250 Volt

• Loudspeaker
• Electro Magnetic Dynamic LS (moving-coil with field excitation coil) / Ø 17 cm = 6.7 inch

• Material
• Wooden case

• from Radiomuseum.org
• Model: Helios 622 - REL, Electrum; Brno

• Shape
• Tablemodel, low profile (big size).

• Dimensions (WHD)
• 490 x 275 x 270 mm / 19.3 x 10.8 x 10.6 inch

• Notes
• Kaukasisch-Nußbaum-Furnier. Oberseite Wurzelholz, Hochglanz. Propellerskala.

• Net weight (2.2 lb = 1 kg)
• 8 kg / 17 lb 9.9 oz (17.621 lb)

• Author
• Model page created by Reinhard Hanschke. See "Data change" for further contributors.

• Other Models

• Here you find 49 models, 28 with images and 33 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from REL, Electrum; Brno