• Country
• United States of America (USA)

• Manufacturer / Brand
• Signal Electric Mfg. Co.; Menominee (MI)

• Year
• 1920–1923

• Category
• Radio part (not a module) 

• Radiomuseum.org ID
• 210840

• Wave bands
• - without

• Power type and voltage
• No Power needed

• Loudspeaker
• - - No sound reproduction output.

• Material
• Wooden case

• from Radiomuseum.org
• Model: Secondary Twin Variable Condenser - Signal Electric Mfg. Co.;

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

• Dimensions (WHD)
• 6.25 x 6.125 x 5 inch / 159 x 156 x 127 mm

• Notes
• Signal Electric Manufacturing Co. No. R-54 Secondary Twin Variable Condenser The No. R-54 contained two variable condensers in one cabinet, a 21 plate variable and a 11 plate variable. By the combination of the binding posts on the front panel three different capacities can be selected.

• Literature/Schematics (1)
• Signal Electric Manufacturing Co. High Class Wireless Apparatus brochure

• Author
• Model page created by Alan Larsen. See "Data change" for further contributors.

• Other Models

• Here you find 34 models, 33 with images and 1 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Signal Electric Mfg. Co.; Menominee (MI)