Antique radios, Old Time Radios
Z220
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Country:
Great Britain (UK)
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| Identical to |
Z220
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| Similar
Tubes |
Normally replaceable-slightly different:
PM22C
Other base:
Y220_4pin
; Z220_4pin
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| Base |
Europe 5-Pin , B5 (Eu O, F, O5A) 1928 (Codex=Foo)
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| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 2 Volts / If 0.2 Ampere / Direct / Battery = |
| Description |
Harries design using critical grid spacing.
gm=2.2mA/V; Po = 750mW.
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| Information source |
History of the British Radio Valve to 1940 p. 186
- - Manufacturers Literature
Babani, International Radio Tube Encyclopaedia
Taschenbuch zum Röhren-Codex 1948/49
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Just Qvigstad
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Z220: Wireless World
David Andrews
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Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):2
Collection of
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