• Country
• People's Republic of China

• Manufacturer / Brand
• Shanghai No.2 上海无线电二厂 Shanghai No.2 Radio Factory; Shanghai

• Year
• 1968 ??

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 178137

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

• Number of Transistors
• 10

• Semiconductors

• Main principle
• Superhet with RF-stage; ZF/IF 465 kHz; 4 AF stage(s)

• Tuned circuits
• 5 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Dry Batteries / 6 Volt

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

• from Radiomuseum.org
• Model: Hongxing 红星 DF111 - Shanghai No.2 上海无线电二厂

• Shape
• Tablemodel, low profile (big size).

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

• Notes
• The model Hongxing 红星 DF111 (Red Star) has the following key features 主要性能: Frequency range 频率范围: broadcast band 525 - 1605 kc. The IF is 465 kc. Loudspeaker impedance is 8 ohm, AF output is 250 mW. 5 diodes.
  The manual 02 lists as factory Shanghai No.2 Radio Factory and manual 03 as Nanjing Dongfang (Eastern) Radio Factory 南京东方无线电厂. Manual 3 gives the details which manual 02 is not listing like transistors: 5 x 3DG200, 3AX31, 3DX2 (or BX2?) 3AX81; diodes 2AP9 2AP9 plus 2 x 3DG6S used as diodes. Loudspeaker 8 ohm. The measurement here we took from manual 03.

• Literature/Schematics (1)
• 02-Radio Manual unknown date, 380 pages (page 118, drawing 133.)

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

• Other Models

• Here you find 67 models, 64 with images and 40 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Shanghai No.2 上海无线电二厂 Shanghai No.2 Radio Factory; Shanghai