Antique radios, Old Time Radios
N821B/38B1
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| Tube type: |
SPECIAL TUBE, other or unknown SHF/EHF (>3 GHz) |
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| Identical to |
N821B/38B1
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| Similar
Tubes |
Other shape (e.g. bulb type):
N610B
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| Base |
SPECIAL TUBEBASE in general
2 Top contacts.
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| Filament |
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| Description |
Bolometer for RF power Measurements.
Mainy used at mm wavelengths and less where other methods are difficult.
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| Information source |
-- Collector info (Sammler)
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Collection of
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