Antique radios, Old Time Radios
HR4
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Country:
Great Britain (UK)
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Brand:
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Ferranti, GB |
| Tube type: |
Half-Wave Vacuum Rectifier Power-supply |
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| Identical to |
HR4
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| Base |
Miniatur-7-Pin-Base B7G, USA 1940
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| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 4 Volts / If 0.5 Ampere / Indirect / Specified voltage AC/DC |
| Description |
Input 2,500V rms, mean output current 30mA
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| Information source |
Universal Vade-Mecum, Electron Valves and Semiconductor Devices group 53
Wireless World (The), London (WW, 79)
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| Tube Tester Data |
Avo CT160 |
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Just Qvigstad
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| Data Compliance |
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