S-40A (Runs 1-2)

• Country
• United States of America (USA)

• Manufacturer / Brand
• Hallicrafters, The; Chicago, IL and Arlington/Grand Prairie, TX

• Year
• 1949/1950

• Category
• Amateur-Receiver (amateur bands, may include broadcast bands)

• Radiomuseum.org ID
• 76150

• Picture
• Schematics

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

• Number of Tubes
• 9

• Valves / Tubes
• 6SG7 6SA7 6SK7 6SK7 6H6 6J5 6SQ7 6F6G 80

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

• Tuned circuits
• 9 AM circuit(s)

• Wave bands
• Broadcast, Short Wave(s) and Police.

• Power type and voltage
• Alternating Current supply (AC) / 105-125 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 5 inch = 12.7 cm

• Power out
• 2.5 W (unknown quality)

• Material
• Metal case

• from Radiomuseum.org
• Model: S-40A - Hallicrafters, The; Chicago,

• Shape
• Tablemodel, low profile (big size).

• Dimensions (WHD)
• 18.5 x 9 x 11 inch / 470 x 229 x 279 mm

• Notes

• Hallicrafters S-40A (Runs 1-2) moved the Audio Transformer from the chassis top to the bottom.  The Rectifier tube was 80 for Runs 1-2; 5Y3 for Runs 3 and above.  The Speaker wires (2) were routed through a small hole and directly soldered in circuit.

  The following table lists some of the easy-to-identify differences of the S-40A versions.

  Additional circuit differences (resistors, capacitors, wiring) are not described here; refer to the schmatics for additional differences.  Note that the "U" model used a Universal power transformer (120/240 volts; 25-60 Hz) for export. It is confirmed that the "(Runs 1-2)" model had a "U" version; it is unknown if the "(Runs 3 and above)" model had a "U" version.

  Refer to S-40 (Original) for the Guide to Identifying Hallicrafters S-40 Versions document.

  Other Original/B versions include S-40 (Original) and S-40B.

  S-40A Model Differences

  Model	Tubes	Rectifier Tube	Speaker Type	Speaker Socket/Plug	Audio Xfmr Location
  S-40A (Runs 1-2)	9	80	PM	N (small hole)	BOTTOM
  S-40A (Runs 3 and above)	9	5Y3	PM	N (small hole)	BOTTOM
  S-40AU	9	80, ?	PM	N (small hole)	BOTTOM

   

  Coverage: 0.540-1.68, 1.68-5.4, 5.3-15.5, 15.5-44MHz, DC Operation by a 6Volt Storage Battery and "B" Batteries or Vibrapack. In the Sears Catalog #198, 1949 is the price $ 110.--.

  Personal design by Raymond Loewy.

  Included in New York's Museum of Modern Art collection.

• Price in first year of sale
• 90.00 $

• Source of data
• Communications Receivers

• Mentioned in
• Radios by hallicrafters (2nd Edition, pgs. 49-50)

• Literature/Schematics (1)
• Beitman Radio Diagrams, Vol. 09, 1949

• Literature/Schematics (2)
• The Spectrum Monitor, June 2020, p 83-88, Adventures in Radio Restoration [S-40] by Rich Post KB8TAD

• Literature/Schematics (3)
• Sears, Roebuck Catalogs (Silvertone) (#198, Spring & Summer 1949, page 628.)

• Literature/Schematics (4)
• Photofact Folder, Howard W. SAMS (Set 33, Date 2/48, Folder 483-10)

• Author
• Model page created by Walter Wiesmüller † May 2012. See "Data change" for further contributors.

• Other Models

• Here you find 922 models, 473 with images and 520 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Hallicrafters, The; Chicago, IL and Arlington/Grand Prairie, TX