Walkman WM-BF67

• Country
• Japan

• Manufacturer / Brand
• Sony Corporation; Tokyo

• Year
• 1988

• Category
• Sound/Video Recorder and/or Player

• Radiomuseum.org ID
• 231208

• Picture
• Schematics

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

• Number of Transistors
• Semiconductors present.

• Semiconductors

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

• Tuned circuits
• 5 AM circuit(s)     7 FM circuit(s)

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

• Details
• Cassette-Recorder or -Player

• Power type and voltage
• Batteries / addl. power jack / 2 x 1.5 / 3 Volt

• Loudspeaker
• - For headphones or amp.

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: Walkman WM-BF67 - Sony Corporation; Tokyo

• Shape
• Very small Portable or Pocket-Set (Handheld) < 8 inch.

• Dimensions (WHD)
• 115.9 x 93.2 x 39.3 mm / 4.6 x 3.7 x 1.5 inch

• Notes

• This Sony Walkman Cassette player features a AM/FM Radio, supports Auto-Reverse, Dolby NR, MegaBass, and Metal Tapes.
  It can record from the Radio and from an external 0.26mV Microphone.
  
  Sound is superb, as long as one replaces the original electrolitic capacitors with new ones.
  
  These old capacitors usually leaks the electrolite after a few years,  loosing the capacitance, resulting in faults like low volume on tape with heavy background noise coming from pre-amplifier instability oscillation, and Dolby NR will whistles strongly when enabled.

   

• Net weight (2.2 lb = 1 kg)
• 0.280 kg / 0 lb 9.9 oz (0.617 lb)

• Author
• Model page created by Jose Mesquita. See "Data change" for further contributors.

• Other Models

• Here you find 3951 models, 3811 with images and 954 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Sony Corporation; Tokyo