• Country
• United States of America (USA)

• Manufacturer / Brand
• RTL, Radiotechnic Laboratory; Evanston, Ill.

• Year
• 1938

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 96399

• Number of Tubes
• 1

• Valves / Tubes

• Wave bands
• - without

• Power type and voltage
• Alternating Current supply (AC) / 95-135 Volt

• Loudspeaker
• - - No sound reproduction output.

• Material
• Leather / canvas / plastic - over other material

• from Radiomuseum.org
• Model: Portable Tube Tester Model M, Series E - RTL, Radiotechnic Laboratory;

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

• Dimensions (WHD)
• 17.5 x 12 x 5.5 inch / 445 x 305 x 140 mm

• Net weight (2.2 lb = 1 kg)
• 6 lb (6 lb 0 oz) / 2.724 kg

• Price in first year of sale
• 39.00 $

• Literature/Schematics (1)
• 1938 Radolek Catalog

• Author
• Model page created by Vitor Oliveira. See "Data change" for further contributors.

• Other Models

• Here you find 5 models, 5 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from RTL, Radiotechnic Laboratory; Evanston, Ill.