• Country
• United States of America (USA)

• Manufacturer / Brand
• Philco, Philadelphia Stg. Batt. Co.; USA

• Year
• 1960 ?

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 136464

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

• Number of Transistors
• 9

• Semiconductors

• Main principle
• Superhet with RF-stage; ZF/IF 455 kHz; 2 AF stage(s)

• Tuned circuits
• 7 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Dry Batteries / 4 x 1.5 Volt

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

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: Nine Transistors T-901BK Code 124 - Philco, Philadelphia Stg. Batt

• Shape
• Portable set > 8 inch (also usable without mains)

• Notes

• The Philco T-901BK is a battery operated portable 9 transistor BC band receiver.  Has RF stage and push-pull audio output stage.  Also has earphone jack that disconnects the speaker for private listening.

  The following models use the same schematic, chassis and cabinet but have different cabinet colors:

  Model	Cabinet Color
  T-901BK	Black
  T-901BR	Brown

   

• Literature/Schematics (1)
• - - Manufacturers Literature (Philco Transistor Radio Service Manual, PR-3484 Dated 1960)

• Literature/Schematics (2)
• Beitman Radio Diagrams, Vol. 21, 1961 (Page 125)

• Literature/Schematics (3)
• Photofact Folder, Howard W. SAMS (Set 535, folder 10 dated 6-61)

• Author
• Model page created by Peter Hoddow. See "Data change" for further contributors.

• Other Models

• Here you find 4019 models, 2215 with images and 3667 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Philco, Philadelphia Stg. Batt. Co.; USA