Transistor Radio 8TP2 Ch= 8RT1 brown

Raytheon Mfg. Co.; Cambridge, MA

  • Year
  • 1955 ??
perfect model
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 82035

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

 Technical Specifications

  • Number of Transistors
  • 8
  • Main principle
  • Superheterodyne (common); ZF/IF 455 kHz; 2 AF stage(s)
  • Tuned circuits
  • 5 AM circuit(s)
  • Wave bands
  • Broadcast only (MW).
  • Power type and voltage
  • Dry Batteries / 4 x 1.5 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 3.5 inch = 8.9 cm
  • Material
  • Leather / canvas / plastic - over other material
  • from Radiomuseum.org
  • Model: Transistor Radio 8TP2 Ch= 8RT1 [brown] - Raytheon Mfg. Co.; Cambridge,
  • Shape
  • Portable set > 8 inch (also usable without mains)
  • Dimensions (WHD)
  • 9.25 x 7 x 2.75 inch / 235 x 178 x 70 mm
  • Notes
  • Just a few weeks after Regency (IDEA) has launched the first transistor radio, Regency TR-1 with 4 transistors, Raytheon brought its much bigger 8TP with the models 8TP-1 (tan leather), 8TP-2 (brown leather), 8TP-3 (beige leather) and 8TP-4 (red leather) - all in 1955 and with 8 transistors really outperforming TR1. This was the second transistor radio built in series in the world, followed by SONY models (e.g. TR-55). But the first SONY to appear in the USA was TR-63 in 1957. See also the pocket transistor radios from GE as models 675, 676, 677 and 678 depending in color from 1955. The 8TP1 was immediately followed by a 7 transistor with the same model names! 

    8 Raytheon transistors (see the two schematics on the model page for 8TP1): 2 of CK761 (oscillator, mixer), 3 of CK760 (IF and detector) and 3 of CK722 for audio (driver, push-pull).
    The first series had 5 x CK760 and 3 x CK721.

  • Price in first year of sale
  • 80.00 $
  • Circuit diagram reference
  • Beitman Radio Diagrams Vol. 16, 1956
  • Author
  • Model page created by Egon Penker. See "Data change" for further contributors.

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