• Country
• Japan

• Manufacturer / Brand
• Sony Corporation; Tokyo

• Year
• 1982

• Category
• Sound/Video Recorder and/or Player

• Radiomuseum.org ID
• 191294

• Number of Transistors
• Semiconductors present.

• Semiconductors

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Power type and voltage
• Dry Batteries / 2 x 1,5 Volt

• Loudspeaker
• - For headphones or amp. / Ø 3.6 cm = 1.4 inch

• Power out
• 0.2 W (unknown quality)

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: Microcassette-Corder M-7 - Sony Corporation; Tokyo

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

• Dimensions (WHD)
• 60 x 112 x 24.5 mm / 2.4 x 4.4 x 1 inch

• Notes
• Tape: microcassette; recording system: 2-track 1-channel monaural. Tape speed: 2.4 cm/s - 1.2 cm/s. Frequency response: 200-5.000 Hz at 2.4 cm position, 200-3.000 Hz at 1.2 cm position. Output: earphone jack ( minijack) for 8-ohm earphone or load impedance 10 kilohms or higher. Sony-o-matic: automatic recording system. Automatic shut-off mechanism at the end of the tape, in either record or playback mode. Built-in electret condenser microphone. Keys for record, play, stop; selector for REV/FF. Red LED for rec/batt. One touch recording from playback mode, for correcting previously recorded portion. Made in Japan.

• Net weight (2.2 lb = 1 kg)
• 0.150 kg / 0 lb 5.3 oz (0.33 lb)

• Literature/Schematics (1)
• Sony operating instructions

• Author
• Model page created by Felice Nicolini. See "Data change" for further contributors.

• Other Models

• Here you find 3913 models, 3773 with images and 947 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Sony Corporation; Tokyo