• Country
• United States of America (USA)

• Manufacturer / Brand
• Philbrick Researches, George A (GAP/R).; Dedham, MA

• Year
• 1958 ??

• Category
• Miscellaneous (Other, Various) - see notes

• Radiomuseum.org ID
• 279811

Click on the schematic thumbnail to request the schematic as a free document.

• Number of Tubes
• 2

• Valves / Tubes
• 12AX7A 6AN8A

• Wave bands
• - without

• Power type and voltage
• Powered by external power supply or a main unit. / AC 6.3 & DC 300 Volt

• Loudspeaker
• - - No sound reproduction output.

• Material
• Bakelite or Plastics (type unknown)

• from Radiomuseum.org
• Model: GAP/R K2-X Operational Amplifier - Philbrick Researches, George A

• Dimensions (WHD)
• 55 x 115 x 38 mm / 2.2 x 4.5 x 1.5 inch

• Mentioned in
• Philbrick Plug-in Computing Amplifiers

• Literature/Schematics (1)
• Electronic Analog Computing Instruments Philbrick Res.

• Author
• Model page created by Aldo Patriarca. See "Data change" for further contributors.

• Other Models

• Here you find 7 models, 7 with images and 4 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Philbrick Researches, George A (GAP/R).; Dedham, MA