• Country
• United States of America (USA)

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

• Year
• 1952

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 53356

• • alternative name: RCA Manufacturing || Victor Talking Machine

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

• Number of Tubes
• 5

• Valves / Tubes
• 12BE6 12BA6 12AV6 50C5 35W4

• Main principle
• Superheterodyne (common); ZF/IF 455 kHz; 2 AF stage(s)

• Tuned circuits
• 6 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Alternating Current supply (AC) / 115 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 4 inch = 10.2 cm

• Power out
• 1.2 W (unknown quality)

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: 2-C-521 Ch= RC-1120 [maroon] - RCA RCA Victor Co. Inc.; New

• Shape
• Tablemodel with Clock ((Alarm-) Clock Radio).

• Dimensions (WHD)
• 11.8 x 6.1 x 5.5 inch / 300 x 155 x 140 mm

• Notes
• The RCA 2C521 is an AC operated 5 tube AM clock Radio. AM tuning range: 540-1600kHz. Has appliance outlet on rear which may be controlled from clock mechanism. Color = Maroon, button color also Maroon.
  There are three case variations: Model 2C521 is maroon, 2C522 is ivory, and 2C527 is of white color.
  There are two basic chassis: RC 1120(-1) for the maroon set, and RC1120-A for the ivory and white sets.
  By obviously technical reason the tube locations of the Demodulator/1st af and the output tube had been interchanged. The 50C5 was moved towards the speaker, and the 12AV6 closer to the IF-transformer L4.
  The revised chasses received new designations: RC1120 became RC1120-B, and RC1120-A became RC1120-C.
  That results in six different Model/Chassis combinations. Six more combinations could be derived theoretically by misinterpretation of service documentation. We list them with appropriate warning remark to avoid future errors.
  the real models are:
  - 2C521 Ch= 1120-1 (with or without suffix),
  - 2C521 Ch= 1120-B,
  - 2C522 Ch= 1120-A,
  - 2C522 Ch= 1120-C,
  - 2C527 Ch= 1120-A,
  - 2C527 Ch= 1120-C.
  The particular features of chassis 1120-D are not (yet) known.

• Net weight (2.2 lb = 1 kg)
• 2.5 kg / 5 lb 8.1 oz (5.507 lb)

• External source of data
• Ernst Erb

• Circuit diagram reference
• Beitman Radio Diagrams Vol. 13, 1953

• Mentioned in
• Machine Age to Jet Age II (page 232.)

• Literature/Schematics (1)
• Rider's Perpetual, Volume 23 (last) = covering up to 1954

• Literature/Schematics (2)
• RCA Victor Service Notes "Red Book" Series (Volume VIII 1952, Page 13)

• 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)