X-551 Ch= RC-1089B

• Country
• United States of America (USA)

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

• Year
• 1950/1951

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 54955

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

• Picture
• Schematics

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

• Number of Tubes
• 5

• Valves / Tubes
• 12BE6 12BA6 12AV6 50L6GT 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
• AC/DC-set / Either AC 50 to 60 cycles or DC, 117V = 110 -120 Volt

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

• Power out
• 1.25 W (1.5 W max.)

• Material
• Bakelite case

• from Radiomuseum.org
• Model: X-551 Ch= RC-1089B - RCA RCA Victor Co. Inc.; New

• Shape
• Tablemodel, with any shape - general.

• Dimensions (WHD)
• 12.25 x 8.625 x 6 inch / 311 x 219 x 152 mm

• Notes

• The RCA X551 is a AC/DC operated 5 tube BC band receiver.  Has phono input jack.  Uses Qty(1) type 47 dial lamp. Cabinet color is Maroon.

  The BC band frequency range is 540 to 1600kHz.

  Early production models used a 500Kohm volume control, which was changed to a 1 Megohm volume control on late production models.  The schematic used for model X551 is the same as is used on model X552 (Which uses chassis RC-1089C). Both models are shown in SAMS Photofact set 129 folder 9 from April 1951.

• Net weight (2.2 lb = 1 kg)
• 6 lb (6 lb 0 oz) / 2.724 kg

• External source of data
• Ernst Erb

• Source of data
• The Radio Collector's Directory and Price Guide 1921 - 1965

• Circuit diagram reference
• Rider's Perpetual, Volume 21, Copyright 1950

• Mentioned in
• Collector's Guide to Antique Radios 4. Edition

• Literature/Schematics (1)
• Beitman Radio Diagrams, Vol. 11, 1951 (Page 110)

• Literature/Schematics (2)
• Rider's Perpetual, Volume 21 = Copyright 1950 (Riders RCA 21-39 to 21-40)

• Literature/Schematics (3)
• RCA Victor Service Notes "Red Book" Series (RCA Victor Service Data Volume VI 1950 Pages 59-60)

• Literature/Schematics (4)
• Photofact Folder, Howard W. SAMS (Set 129 Folder 9)

• Other Models

• Here you find 5133 models, 3236 with images and 4169 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)