• Country
• Finland

• Manufacturer / Brand
• Oy Helvar; Helsinki

• Year
• 1948 ?

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 110089

• Number of Tubes
• 6

• Valves / Tubes
• UCH21 UF21 UF21 UBL21 UM4 UY1N

• Main principle
• Superheterodyne (common)

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

• Power type and voltage
• AC/DC-set / 110, 125, 220, 240 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 18 cm = 7.1 inch

• Material
• Wooden case

• from Radiomuseum.org
• Model: 5146TW - Oy Helvar; Helsinki

• Dimensions (WHD)
• 515 x 320 x 245 mm / 20.3 x 12.6 x 9.6 inch

• Notes
• Laji 5146 TW chassis is like Laji 569, but has a detector tube UM4.

• Net weight (2.2 lb = 1 kg)
• 7.1 kg / 15 lb 10.2 oz (15.639 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