• Country
• Great Britain (UK)

• Manufacturer / Brand
• Marconi's Wireless Telegraph Co. Ltd.

• Year
• 1920 ?

• Category
• Radio module pre 1926 (not a part, not a key)

• Radiomuseum.org ID
• 306311

• Number of Tubes
• 1

• Valves / Tubes
• FE1_MO

• Main principle
• Detector with Vacuum Tube (Valve), no tuner

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

• Power type and voltage
• Storage and/or dry batteries / 4 & 80 Volt

• Loudspeaker
• - For headphones or amp.

• Material
• Wooden case, TUBES VISIBLE.

• from Radiomuseum.org
• Model: Amplifier Type 91 - Marconi's Wireless Telegraph

• Shape
• Tablemodel, with any shape - general.

• Dimensions (WHD)
• 300 x 230 x 180 mm / 11.8 x 9.1 x 7.1 inch

• Notes

• RF Amplifier - Diode Detector. Range switch for short wave, long wave and 600m.

• Net weight (2.2 lb = 1 kg)
• 3.8 kg / 8 lb 5.9 oz (8.37 lb)

• Author
• Model page created by Musée des Radios Museum. See "Data change" for further contributors.

• Other Models

• Here you find 94 models, 92 with images and 17 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Marconi's Wireless Telegraph Co. Ltd.