• Country
• United States of America (USA)

• Manufacturer / Brand
• Silver - Marshall; Chicago, IL

• Year
• 1928/1929

• Category
• Kit (Parts plus instruction) or building instructions only

• Radiomuseum.org ID
• 57923

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

• Number of Tubes
• 7

• Valves / Tubes
• UX222 UX222 UX222 UX222 UX201A UX112A UX171A or UX210 or UX250

• Main principle
• TRF (Tuned-Radio-Frequency but use of regeneration unknown); 2 AF stage(s); Screengrid 1926-1935

• Tuned circuits
• 5 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Powered by external power supply or a main unit.

• Loudspeaker
• - This model requires external speaker(s).

• Material
• Metal case

• from Radiomuseum.org
• Model: Sargent-Rayment Seven SM-710 [Kit] - Silver - Marshall; Chicago, IL

• Shape
• Tablemodel, Box - most often with Lid (NOT slant panel).

• Dimensions (WHD)
• 27.9 x 8.5 x 12.5 inch / 709 x 216 x 318 mm

• Notes
• The 710 Sargent-Rayment is a precision laboratory radio receiver. Electrically, the receiver consists of five sharply tuned circuits in a four-stage screen grid R.F. amplifier, all tuned by a single illuminated drum, and each stage provided with individual verniers. One knob turns the set off and on and a second controls the volume from zero to maximum. Following the R.F. amplifiers are the detector and the A.F. amplifiers, using the new S-M 255 and 256 audio transformers. A 171 power tube can be used, or with the S-M 675 ABC power supply, a UX210 or UX250 is used in the last audio stage, for which a 251 output coupler is included. Light socket operation is had with standard A and B power units or batteries may be used. Each circuit is individually shielded, bypassed and isolated from all others.
  Rider's erroneously spells this model "Sargent-Raymond"

• Price in first year of sale
• 130.00 $

• External source of data
• Ernst Erb

• Source of data
• Radio Collector`s Guide 1921-1932

• Circuit diagram reference
• Rider's Perpetual, Volume 1 = 1931/1934 (for 1919-1931)

• Mentioned in
• Radio Manufacturers of the 1920's, Vol. 3

• Literature/Schematics (1)
• Radio Broadcast, Oct. 1928, Pages 354, 355, 356

• Literature/Schematics (2)
• Radio Broadcast, Jan. 1929, Pages 173, 174

• Literature/Schematics (4)
• August 1928 Silver-Marshall catalog page 6-7

• Other Models

• Here you find 225 models, 116 with images and 122 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Silver - Marshall; Chicago, IL