• Country
• United States of America (USA)

• Manufacturer / Brand
• GTC, General Transformer Corporation; Chicago, IL

• Year
• 1939 ??

• Category
• Power supply/conditioner or battery or charger 

• Radiomuseum.org ID
• 134699

• • alternative name: GTC

• Number of Tubes
• 1

• Valves / Tubes
• 5W4GT

• Wave bands
• - without

• Power type and voltage
• Alternating Current supply (AC) / 110-120 Volt

• Loudspeaker
• - - No sound reproduction output.

• Material
• Metal case

• from Radiomuseum.org
• Model: Porta-Power L - GTC, General Transformer

• Shape
• Chassis only or for «building in»

• Notes
• GTC Porta-Power model L, Battery replacement power supply;
  Supplies 2 V & 90 V DC for 4 - 8 tube Farm Radios.

• Source of data
• -- Collector info (Sammler)

• Author
• Model page created by a member from A. See "Data change" for further contributors.

• Other Models

• Here you find 6 models, 6 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from GTC, General Transformer Corporation; Chicago, IL