Tube and Battery Tester 777

• Country
• United States of America (USA)

• Manufacturer / Brand
• Weston Electrical Instrument Co.; Newark, N.J.; (Jewell Electrical Instrument Co.; Chicago, IL)

• Year
• 1940–1946 ?

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 206397

• • alternative name: Jewell

• Picture
• Schematics

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

• Number of Tubes
• 1

• Valves / Tubes
• 01A or 71A

• Wave bands
• - without

• Power type and voltage
• Alternating Current supply (AC) / 115 Volt

• Loudspeaker
• - - No sound reproduction output.

• Material
• Wooden case

• from Radiomuseum.org
• Model: Tube and Battery Tester 777 - Weston Electrical Instrument

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

• Notes

• There appears to have been five distinct models of the Weston 777.  The 1941 Allied catalog lists a 777-1 (Type 1) for $49.50 and a 777-2 (Type 2) for $54.75.  The difference between these two types is unknown.  The Weston 777 does not appear again in the Allied catalogs until 1946 (after WW2) where it is listed as a 777, Type 7A for $68.35.  The Type 7A has the added capability to test miniature tubes.  

  Radio Service Dealer 1944-1945 (an Australian publication) "Technical Service Portfolio" lists a schematic for Type 8 and Type 9, which use a 71A vacuum tube.  The earlier Type models use a 01A vacuum tube.

  The Weston 777 was replaced by the Weston 798 in 1946.

• Mentioned in
• Allied Radio Catalog (Knight) (1941, page 60; 1946, page 17)

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

• Other Models

• Here you find 186 models, 161 with images and 98 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Weston Electrical Instrument Co.; Newark, N.J.; (Jewell Electrical Instrument Co.; Chicago, IL)