• Country
• Finland

• Manufacturer / Brand
• Oy Helvar; Helsinki

• Year
• 1937/1938

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 194200

• Number of Tubes
• 3

• Valves / Tubes
• AF7 AL4 AZ1

• Main principle
• TRF (Tuned-Radio-Frequency but use of regeneration unknown)

• Tuned circuits
• 1 AM circuit(s)

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

• Power type and voltage
• Alternating Current supply (AC) / 110; 125; 220; 250 Volt

• Loudspeaker
• Permanent or electro-dynamic (moving coil), system not known yet. / Ø 8 inch = 20.3 cm

• Material
• Wooden case

• from Radiomuseum.org
• Model: 2/37 - Oy Helvar; Helsinki

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

• Dimensions (WHD)
• 460 x 265 x 235 mm / 18.1 x 10.4 x 9.3 inch

• Notes
• Helvar 2/37 has Gram. input.

• Net weight (2.2 lb = 1 kg)
• 9.8 kg / 21 lb 9.4 oz (21.586 lb)

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

• Author
• Model page created by Jari Aalto. See "Data change" for further contributors.

• Other Models

• Here you find 254 models, 215 with images and 93 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Oy Helvar; Helsinki