Wireless World
1938 Valve Data Supplement

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Introduction and Information
Table References
Base Connections (Part 1)
Base Connections (Part 2)

Frequency Changers
Part 1   Brimar, Cossor, Dario, Ever-Ready
Part 2   Ever-Ready, Ferranti, Hivac, Marconi/Osram, Mazda,
  Mullard
Part 3   Mullard, Ostar-Ganz, Triotron, Tungsram, American
Screen-Grid Valves
Part 4   Brimar, Cossor, Dario, Ever-Ready, Hivac, Lissen,
  Marconi/Osram, Mazda
Part 5   Mullard, Ostar-Ganz, Triotron, Tungsram, American
Variable-Mu Valves
Part 5   Brimar, Cossor
Part 6   Cossor, Dario, Ever-Ready, Hivac, Lissen,
  Marconi/Osram, Mazda, Mullard
Part 7   Mullard, Ostar-Ganz, Triotron, Tungsram, American
Diodes
Part 7   Brimar, Cossor
Part 8   Dario, Ever-Ready, Hivac, Marconi/Osram, Mazda,
  Mullard, Ostar-Ganz, Triotron, Tungsram, Westinghouse,
  American
Triode Valves
(AC resistance greater than 7,000 ohms)
Part 8   Brimar
Part 9   Cossor, Dario, Ever-Ready, Hivac, Lissen,
  Marconi/Osram
Part 10   Marconi/Osram, Mullard, Ostar-Ganz, Triotron
Part 11   Tungsram, American
Triode Valves
(AC resistance less than 7,000 ohms)
Part 11   Brimar, Cossor
Part 12   Dario, Ever-Ready, Hivac, Lissen, Marconi/Osram,
  Mazda, Mullard
Part 13   Mullard, Ostar-Ganz, Triotron, Tungsram, American
Output Tetrode and Pentode Valves
Part 13   Brimar
Part 14   Cossor, Dario, Ever-Ready, Hivac, Lissen,
  Marconi/Osram
Part 15   Mazda, Mullard, Ostar-Ganz, Triotron, Tungsram
Part 16   Tungsram, American
Quiescent Output Valves
Part 16   Cossor, Dario
Part 17   Ever-Ready, Hivac, Lissen, Marconi/Osram, Mazda,
  Mullard, Triotron, Tungsram, American
Rectifying Valves
Part 17   Brimar, Cossor, Dario
Part 18   Dario, Ever-Ready, Hivac, Lissen, Marconi/Osram,
  Mazda, Mullard
Part 19   Ostar-Ganz, Philips, Triotron, Tungsram, American
Metal Rectifiers
Part 20   Westinghouse
Vibrators
Part 20   Bulgin, Heaver-Mallory, Masteradio-Mallory,
  Rothermel, Simmonds
Barretters
Part 20   Marconi-Osram, Osram, Philips, Tungsram

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