• Country
• United States of America (USA)

• Manufacturer / Brand
• Radio City Products Company, Inc.(RCP); New York, NY and Easton, PA

• Year
• 1940 ?

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 202334

• Number of Tubes
• 1

• Valves / Tubes
• 6H6

• Wave bands
• - without

• Power type and voltage
• Alternating Current supply (AC)

• Loudspeaker
• - - No sound reproduction output.

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

• from Radiomuseum.org
• Model: Dynoptimum Tube Tester 309 - Radio City Products Company,

• Shape
• Tablemodel without push buttons, Mantel/Midget/Compact up to 14

• Dimensions (WHD)
• 229 x 305 x 150 mm / 9 x 12 x 5.9 inch

• Net weight (2.2 lb = 1 kg)
• 4.1 kg / 9 lb 0.5 oz (9.031 lb)

• Author
• Model page created by Gottfried Silberhorn. See "Data change" for further contributors.

• Other Models

• Here you find 79 models, 70 with images and 14 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Radio City Products Company, Inc.(RCP); New York, NY and Easton, PA