• Country
• Japan

• Manufacturer / Brand
• Panasonic, Matsushita, National ナショナル (also tubes); Osaka

• Year
• 1982

• Category
• Sound/Video Recorder and/or Player

• Radiomuseum.org ID
• 340101

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

• Number of Transistors
• 16

• Semiconductors
• 2SC2412K 2SA1037 2SA1037

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Details
• Cassette-Recorder or -Player

• Power type and voltage
• Batteries / addl. power jack / A: 2 x 1,5/3 Volt

• Loudspeaker
• - For headphones or amp.

• Power out
• 0.00635 W (unknown quality)

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: dbx WAY RQ-J20X - Panasonic, Matsushita,

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

• Dimensions (WHD)
• 88 x 138 x 27.1 mm / 3.5 x 5.4 x 1.1 inch

• Notes

• World's first dbx-Equipped Stereo Cassette Player

  RQ-2720 Mechanism Series.

  Specifications

  Power Requirements	AC; with optional AC adaptor RP-31
  	Battery; 3 V, two R6 size dry batteries
  	Rechargeable battery; with optional rechargeable battery pack RP-OO09
  Track system:	4-track 2-channel stereo playback with included stereo headphones
  Tape speed:	4.8 cm/s
  Dynamic range:	More than 97 dB (at 1 kHz), with dbx in
  Signal-to-noise ratio:	dbx in; 81 dB
  	dbx out; 56dB (A-weighted, 3% THD at 1 kHz)
  Fast forward and rewind time:	Approx. 120 seconds with C-60 cassette tape
  Input:	DC in; 3V
  Output:	Headphones: output level 630 mV (162)/CH
  Head:	1 LH head for stereo playback

  16 transistors, 4 diodes & 3 ICs. Transistors only listed one of each type.

  IC's	AN291S BAF5204LN AN6257S

   

  Mit DBX Geräuschunterdrückung. Mechanisch sehr ähnlich (gleich) dem Modell RQ-J9.

  Flexible Platine, mit häufig ausgelaufenen THT Elkos. Auslaufen der Elkos macht das Ersetzen diverser leiterbahnen notwendig.

   

• Net weight (2.2 lb = 1 kg)
• 0.340 kg / 0 lb 12 oz (0.749 lb)

• Price in first year of sale
• 38,000.00 Yen

• Author
• Model page created by Nicolas Rumpf. See "Data change" for further contributors.

• Other Models

• Here you find 2999 models, 2774 with images and 626 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Panasonic, Matsushita, National ナショナル (also tubes); Osaka