All-Wave 726SW late version

Silver - Marshall; Chicago, IL

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  • Year
  • 1931
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 57943

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

 Technical Specifications

  • Number of Tubes
  • 11
  • Main principle
  • Superhet, double/triple conversion
  • Wave bands
  • Broadcast plus more than 2 Short Wave bands.
  • Power type and voltage
  • Alternating Current supply (AC) / 110-120 Volt
  • Loudspeaker
  • Permanent or electro-dynamic (moving coil), system not known yet. / Ø 10.5 inch = 26.7 cm
  • Power out
  • 5 W (undistorted)
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: All-Wave 726SW [late version] - Silver - Marshall; Chicago, IL
  • Shape
  • Chassis only or for «building in»
  • Dimensions (WHD)
  • 20.5 x 8.5 x 12 inch / 521 x 216 x 305 mm
  • Notes

  • The Silver-Marshall 726SW (new version) is a double conversion super heterodyne receiver, covering 550 to 10 meters in five bands. It has push-pull audio, terminating with the included S-M 855 10.5 inch dynamic speaker.

    As a short wave broadcast receiver, the antenna is fed into the short wave detector circuit using a 24 type tube. A short wave oscillator of special design using a '27 tube, operating at 650 kc away from the short wave detector heterodynes the incoming signal to the frequency to which the RF stage of the broadcast receiver is tuned, the broadcast tuning dial being set on a clear channel at approx. 650 kc for best results. As a short wave super, there are three detectors and two oscillators, giving so called double "suping".

    Also see the Silver-Marshall 726SW (early version)

  • Price in first year of sale
  • 139.00 $
  • External source of data
  • Ernst Erb
  • Mentioned in
  • Short Wave Craft Dec31/Jan32 page 283

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