T4-8A Tombstone, tube 6B7

RCA (RCA Victor Co. Inc.); New York (NY)

  • Year
  • 1935
perfect model
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 54775
    • alternative name: RCA Manufacturing || Victor Talking Machine

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

 Technical Specifications

  • Number of Tubes
  • 4
  • Main principle
  • Superheterodyne (common); ZF/IF 460 kHz; Reflex
  • Wave bands
  • Broadcast only (MW).
  • Power type and voltage
  • Alternating Current supply (AC) / 105-125;200-250 Volt
  • Loudspeaker
  • Electro Magnetic Dynamic LS (moving-coil with field excitation coil) / Ø 6 inch = 15.2 cm
  • Power out
  • 1.75 W (unknown quality)
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: T4-8A [Tombstone, tube 6B7] - RCA RCA Victor Co. Inc.; New
  • Shape
  • Tablemodel, Tombstone = decorative upright, not cathedral but can have rounded edges.
  • Dimensions (WHD)
  • 11.25 x 14.125 x 6.25 inch / 286 x 359 x 159 mm
  • Notes
  • The RCA model T4-8A is the improved version of T4-8. Mainly reflexing of AF via IF stage, and 6B7 replacing the 6F7.
    Most probably for both chassis versions there are at least the following cabinet versions:
    Low profile T4-9 and T4-9A, Thombstone T4-8 and T48A and Cathedral T4-8 and T4-8A.

  • Net weight (2.2 lb = 1 kg)
  • 12 lb (12 lb 0 oz) / 5.448 kg
  • External source of data
  • Ernst Erb

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