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Tube Database (7,341 tube types · 1,270 archive entries)

Other (3,257 tube types), Pre (2,314 tube types), Power (1,030 tube types), Rectifier (740 tube types)
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Manufacturer record

International Servicemaster

2 Tubes manufactured by International Servicemaster

  • International Servicemaster 12DF7 tube — photo 1 of 3
    International Servicemaster 12DF7 tube — photo 2 of 3
    International Servicemaster 12DF7 tube — photo 3 of 3

    Use the Left and Right Arrow keys to browse photos. Use Home for the first photo and End for the last photo.

    Photo 1 of 3

    12DF7

    Brand
    International Servicemaster
  • International Servicemaster 6CA7, EL34 tube - RFT — photo 1 of 5
    International Servicemaster 6CA7, EL34 tube - RFT — photo 2 of 5
    International Servicemaster 6CA7, EL34 tube - RFT — photo 3 of 5
    International Servicemaster 6CA7, EL34 tube - RFT — photo 4 of 5
    International Servicemaster 6CA7, EL34 tube - RFT — photo 5 of 5

    Use the Left and Right Arrow keys to browse photos. Use Home for the first photo and End for the last photo.

    Photo 1 of 5

    6CA7, EL34

    Maker
    RFT
    Brand
    International Servicemaster
Showing 1–2 of 2 results