Antique radios, Old Time Radios
X661
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| Tube type: |
COUNTING AND MEASUREMENT, general |
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| Identical to |
X661
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| Similar
Tubes |
Normally replaceable-slightly different:
CV2183
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Successor Tubes
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CV2183
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| Filament |
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| Description |
Bolometer - R 2.7 ohms cold, max 22 ohms.
The 2 Pins compatible with B7G base.
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| Information source |
-- Original-techn. papers.
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