• Country
• Japan

• Manufacturer / Brand
• Pioneer Corporation; Tokyo

• Year
• 1974

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 143199

• Number of Transistors
• Semiconductors present.

• Semiconductors

• Main principle
• Superheterodyne (common)

• Wave bands
• Broadcast (BC) and FM or UHF.

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

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

• Power out
• 200 W (unknown quality)

• Material
• Wooden case

• from Radiomuseum.org
• Model: Stereo Receiver SX-939 - Pioneer Corporation; Tokyo

• Shape
• Book-shelf unit.

• Dimensions (WHD)
• 520 x 175 x 420 mm / 20.5 x 6.9 x 16.5 inch

• Notes
• AM/FM-Stereo-Receiver mit 2x100 Watt Sinus an 4 Ohm. Parallel-Gegentakt-OCL-Endverstärkerstufe.

• Net weight (2.2 lb = 1 kg)
• 18.5 kg / 40 lb 12 oz (40.749 lb)

• Source of data
• -- Original prospect or advert

• Author
• Model page created by Franz Scharner. See "Data change" for further contributors.

• Other Models

• Here you find 1140 models, 1125 with images and 200 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Pioneer Corporation; Tokyo