• Country
• Germany

• Manufacturer / Brand
• Robotron-Messelektronik 'Otto Schön' Dresden, VEB; Dresden, (Ostd.)

• Year
• 1965

• Category
• Commercial Transmitter & Receiver (TRX not Amateur)

• Radiomuseum.org ID
• 116618

Click on the schematic thumbnail to request the schematic as a free document.

• Number of Transistors
• 11

• Semiconductors

• Main principle
• Transceiver; ZF/IF 450 kHz; 2 AF stage(s)

• Wave bands
• Wave Bands given in the notes.

• Power type and voltage
• Storage Battery for all (e.g. for car radios and amateur radios) / 6 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 5.5 cm = 2.2 inch

• Material
• Metal case

• from Radiomuseum.org
• Model: Handfunksprechgerät UFT431 1445.25 F3 - Robotron-Messelektronik 'Otto

• Shape
• Portable set > 8 inch (also usable without mains)

• Dimensions (WHD)
• 79 x 230 x 36 mm / 3.1 x 9.1 x 1.4 inch

• Notes

• Ein Kanal im Frequenzbereich 26,97 bis 27,27 MHz, 20 kHz-Raster, Amplitudenmodulation.
  Sendeleistung 100 mW, NF-Leistung 100 mW.
  Direktaufladung des Akku über Steckdose.
  Lautsprecher ist gleichzeitig Mikrofon, abschraubbare Teleskopantenne.

  Siehe auch Robotron UFT-430

• Net weight (2.2 lb = 1 kg)
• 0.830 kg / 1 lb 13.3 oz (1.828 lb)

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

• Other Models

• Here you find 34 models, 29 with images and 11 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Robotron-Messelektronik 'Otto Schön' Dresden, VEB; Dresden, (Ostd.)