Antique radios, Old Time Radios
457A
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Country:
United States of America (USA)
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| Identical to |
457A
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| Base |
Octal (Int.Octal, IO) K8A, USA 1935
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| Filament |
Vf 6.3 Volts / If 0.88 Ampere / Indirect |
| Description |
10.7 to 11.7 GHz tuning range; 600V max resonator.
Typical operation: 400V resonator, -80 to -165V reflector, 41.5mA typical, 75mA max cathode current, 100 mW min. output power.
Heater-cathode voltage +/-50V max. Body temp 130 C max. Reflector
resistance 500 kilohms. Output 100 mW min, typically 120 mW @ 10.7 GHz and
230 mW @ 11.7 GHz. Waveguide out.
Used in microwave communication systems.
Pin 1 resonator, 2 & 7 heater, 3 reflector, 8 cathode.
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| Information source |
Tube Lore (I)
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457A
Emilio Ciardiello
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Just Qvigstad
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