• Country
• Netherlands

• Manufacturer / Brand
• Haagsche Radio Onderneming, Den Haag

• Year
• 1929

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 69492

• Number of Tubes
• 4

• Valves / Tubes

• Main principle
• TRF with regeneration; 1 AF stage(s)

• Tuned circuits
• 2 AM circuit(s)

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

• Power type and voltage
• Alternating Current supply (AC)

• Loudspeaker
• - For headphones or amp.

• Material
• Wooden case

• from Radiomuseum.org
• Model: Harophone - Haagsche Radio Onderneming,

• Shape
• Tablemodel, with any shape - general.

• External source of data
• Radio Amateur Museum / Frans J.J. Driesens + ISBN 90-76014-04-3.

• Source of data
• Opkomst van de Nederlandse Radio-Industrie

• Other Models

• Here you find 3 models, 1 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Haagsche Radio Onderneming, Den Haag