• Country
• Czechoslovakia

• Manufacturer / Brand
• Tesla; Praha, Bratislava etc.

• Year
• 1990 ??

• Category
• Amateur TRX: Transmitter/Receiver (and Transceiver)

• Radiomuseum.org ID
• 213937

• • Brand: Supraphon

• Number of Transistors
• Semiconductors present.

• Semiconductors

• Main principle
• Transceiver

• Power type and voltage
• Storage and/or dry batteries / 13,5 Volt

• Loudspeaker
• - This model requires external speaker(s).

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: VO 31 - Tesla; Praha, Bratislava etc.

• Shape
• Very small Portable or Pocket-Set (Handheld) < 8 inch.

• Dimensions (WHD)
• 180 x 70 x 175 mm / 7.1 x 2.8 x 6.9 inch

• Notes
• Empfänger und Sender, Leistung 1 Watt oder 10 Watt, umschaltbar.

• Net weight (2.2 lb = 1 kg)
• 1.5 kg / 3 lb 4.9 oz (3.304 lb)

• Author
• Model page created by Wolfgang Lill. See "Data change" for further contributors.

• Other Models

• Here you find 1874 models, 1197 with images and 680 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Tesla; Praha, Bratislava etc.