• Country
• United States of America (USA)

• Manufacturer / Brand
• Supreme Premium Products; New York

• Year
• 1990 ??

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 193527

• Wave bands
• - without

• Power type and voltage
• Alternating Current supply (AC) / 110; 220 Volt

• Loudspeaker
• - - No sound reproduction output.

• Material
• Metal case

• from Radiomuseum.org
• Model: Step Up & Down Transformer ST-300U/D - Supreme Premium Products; New

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

• Dimensions (WHD)
• 125 x 100 x 160 mm / 4.9 x 3.9 x 6.3 inch

• Notes
• Converts electricity voltage from 220/240 to 110/120 or 110/120 to 220/240; maximum power 300 Watts; panel ON/OFF switch.

• Net weight (2.2 lb = 1 kg)
• 2 kg / 4 lb 6.5 oz (4.405 lb)

• Author
• Model page created by Emilio Focosi. See "Data change" for further contributors.

• Other Models

• Here you find 2 models, 2 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Supreme Premium Products; New York