• Country
• Japan

• Manufacturer / Brand
• Sharp; Osaka

• Year
• 1970

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 124026

• • alternative name: Hayakawa Electric Co.Ltd.

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

• Number of Transistors
• 25

• Semiconductors
• 3SK30 2SC460 2SC535 2SC458 2SC454 2SD220 1S2076 1N60 M8513 1S1718

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

• Tuned circuits
• 6 AM circuit(s)     8 FM circuit(s)

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

• Power type and voltage
• Alternating Current supply (AC) / 110-240 Volt

• Loudspeaker
• - For headphones or amp.

• Material
• Metal case

• from Radiomuseum.org
• Model: STT-31 - Sharp; Osaka

• Shape
• Book-shelf unit.

• Dimensions (WHD)
• 340 x 104 x 233 mm / 13.4 x 4.1 x 9.2 inch

• Notes

• Sharp Stereo Tuner STT-31

  UKW Empfindlichkeit 1,6 µV (nach IHF)

  passender Verstärker siehe Sharp STM-31

  FM IF contains also 3 Ceramic (Piezo) Filters and a limiting amplifier 4IC-403.

  Each solid state device listed once only.

• Net weight (2.2 lb = 1 kg)
• 5 kg / 11 lb 0.2 oz (11.013 lb)

• Price in first year of sale
• 644.00 DM

• Literature/Schematics (1)
• -- Original-techn. papers. (HiFi Jahrbuch 5 (1970))

• Author
• Model page created by Josef Pilz. See "Data change" for further contributors.

• Other Models

• Here you find 1338 models, 1209 with images and 517 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Sharp; Osaka