• Country
• United States of America (USA)

• Manufacturer / Brand
• RCA (RCA Victor Co. Inc.); New York (NY)

• Year
• 1935

• 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.

• Number of Tubes
• 4

• Valves / Tubes
• 6A7 6B7 41 1-V

• 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

• Source of data
• Collector's Guide to Antique Radios (6th edition)

• Mentioned in
• Machine Age to Jet Age II

• Literature/Schematics (1)
• RCA Victor Service Notes "Red Book" Series

• Literature/Schematics (2)
• Rider's Perpetual, Volume 6 = 1935 and before (6-73)

• Literature/Schematics (3)
• Rider's Perpetual, Volume 7 = 1936 and before (7-4)

• Other Models

• Here you find 5131 models, 3234 with images and 4167 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from RCA (RCA Victor Co. Inc.); New York (NY)