Antique radios, Old Time Radios
D21_Hytron
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| Tube type: |
Beam Power Tube Text |
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Late but no serial production. For instance only
development samples. ***** |
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| Identical to |
D21_Hytron
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Successor Tubes
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3D21
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| Base |
Octal (Int.Octal, IO) K8A, USA 1935
Top contact with a cap.
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| Filament |
Vf 12.6 Volts / If 0.85 Ampere / Indirect |
| Description |
Beam power tube intended to operate as blocking oscillator for pulse modulators up to 20KW. May also be used as deflection amplifier. Specially designed to utilize high-volume materials and production techniques, typical of receiving tubes.
Centre-tapped heater; may be operated at 6.3V, 1.7A. 15W plate dissipation.
This is the developmental code for 3D21.
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Dimensions (WHD)
incl. pins / tip |
46 x 122 x mm / 1.81 x 4.80 x inch |
| Information source |
- - Manufacturers Literature
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D21_Hytron: Manufacturer's Literature
Emilio Ciardiello
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Just Qvigstad
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