• Country
• People's Republic of China

• Manufacturer / Brand
• Shanghai 上海红鹰五七工厂 Shanghai Hongying Wuqi Factory; Shanghai

• Year
• 1981 ??

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 242988

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

• Number of Transistors
• 10

• Semiconductors
• 3DG201B 3DG201B 3DG201B 3DG201B 3DG201B 3AX31A 3DX201B 3AX81B 3DG6S 3DG6S

• Main principle
• Superheterodyne (common); ZF/IF 465 kHz; 2 AF stage(s)

• Tuned circuits
• 4 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Batteries / addl. power jack / 4 x 1.5 / ? Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 9 cm = 3.5 inch

• Power out
• 0.25 W (unknown quality)

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: DF111 - Shanghai 上海红鹰五七工厂

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

• Dimensions (WHD)
• 310 x 135 x 90 mm / 12.2 x 5.3 x 3.5 inch

• Notes

• The two transistors 3DG6S are used as stabilizer diodes.

  The cinch connector on the rear was added for an external power supply.

   

• Net weight (2.2 lb = 1 kg)
• 1.1 kg / 2 lb 6.8 oz (2.423 lb)

• Author
• Model page created by Walter Vollenweider. See "Data change" for further contributors.

• Other Models

• Here you find 1 models, 1 with images and 1 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Shanghai 上海红鹰五七工厂 Shanghai Hongying Wuqi Factory; Shanghai