Antique radios, Old Time Radios
D100-600
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| Tube type: |
Ballast Tube (neither FeH or Urdox) Text |
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| Identical to |
D100-600
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| Similar
Tubes |
Different maximum ratings:
D250
Other characteristic (electr. data):
D100-13
Multiple differences or of other kind:
CV1877
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| Base |
UX-Base (4 Pins (2 thick, USA 1924, UX)
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| Filament |
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| Description |
Dummy antenna resistor. 600ohm 100W non-inductive. Ohmite mfg. Co., Chicago.
The D100 (100W) and D250 (250W) RF resistors were available in 13 resistance values, from 8 to 600 ohms. Distributed capacitance was around 5pF, while residual inductance was between 0.1 and 1 microhenries, depending upon resistance value. Max operating frequency ranges from 40MHz for the 13 ohms type to 5MHz for the 600 ohms.
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| Information source |
-- Original-techn. papers. Blackburn, MIT Components Handbook
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Just Qvigstad
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Collection of
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