• Country
• United States of America (USA)

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

• Year
• 1955

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 71804

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

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

• Number of Transistors
• 6

• Semiconductors
• 235_TI 234_TI 234_TI 2N109 2N109 2N109 1N295

• Main principle
• Superheterodyne (common); ZF/IF 455 kHz

• Tuned circuits
• 5 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Dry Batteries / 9 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 2.75 inch = 7 cm

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: 7-BT-9J Ch= RC-1159 - RCA RCA Victor Co. Inc.; New

• Shape
• Very small Portable or Pocket-Set (Handheld) < 8 inch.

• Dimensions (WHD)
• 3.5 x 5.75 x 1.5 inch / 89 x 146 x 38 mm

• Notes
• The 7-BT-9J, Chassis RC-1159 is RCA's first transistor radio. Transistors: 235, 2 of 234 and 3 of 2N109 plus diode 1N295. The 7-BT-9J has a diagonally divided front with right front round dial overlapping perforated grill area, top right thumbwheel on/off/volum knob. In the same year also the 7-BT-10K arrived.

• Circuit diagram reference
• Beitman Radio Diagrams Vol. 16, 1956

• Mentioned in
• The Collector's Guide To Antique Radios 2. Edition (Production Changes Bulletin 172)

• Literature/Schematics (1)
• Photofact Folder, Howard W. SAMS (Set 325 Folder 10)

• Literature/Schematics (2)
• Photofact Folder, Howard W. SAMS (Set 335 Folder 1 date 10-56)

• Literature/Schematics (3)
• Photofact Folder, Howard W. SAMS (Set 327 Folder 10 dated 8-56)

• Literature/Schematics (4)
• Antique Radio Magazine - Italy, Club Antique Radio Magazine (n.149 (maggio-giugno 2019) pag.42-47)

• Author
• Model page created by Ernst Erb. See "Data change" for further contributors.

• 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)