• Country
• Czechoslovakia

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

• Year
• 1985/1986

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 204145

• • Brand: Supraphon

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

• Number of Transistors
• 11

• Semiconductors
• KF125_Transistor KF125_Transistor KF125_Transistor KC148 KF124 KF124 KC148 KC148 KC148 KC148 KC149 A281D MBA810 MAA550

• Main principle
• Superheterodyne (common); ZF/IF 455/10700 kHz

• Wave bands
• Broadcast, Long Wave, Short Wave plus FM or UHF.

• Power type and voltage
• Alternating Current supply (AC) / 220 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) - elliptical

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: Duetto 444 A-2 - Tesla; Praha, Bratislava etc.

• Shape
• Tablemodel with Push Buttons.

• Dimensions (WHD)
• 400 x 130 x 180 mm / 15.7 x 5.1 x 7.1 inch

• Notes
• Tesla model Duetto 444A from Praha and this model from Tesla Bratislava, Duetto 444A-2: UKW OIRT 65···73,5 MHz and CCIR 88···104 MHz; Socket for second loudspeaker and one for separate antenna, TA/TB.

• Net weight (2.2 lb = 1 kg)
• 2.7 kg / 5 lb 15.2 oz (5.947 lb)

• Author
• Model page created by Ernst Erb. See "Data change" for further contributors.

• Other Models

• Here you find 1832 models, 1138 with images and 643 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Tesla; Praha, Bratislava etc.