Antique radios, Old Time Radios
28D7
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Country:
United States of America (USA)
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| Identical to |
28D7
= CV945
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| Similar
Tubes |
Other class quality (otherwise equal):
28D7W
; GB-28D7W
Different maximum ratings:
1238
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Successor Tubes
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CV946
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| Base |
Loctal-8, B8G (Sylvania, 1938) (Codex=Wab)
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| Filament |
Vf 28 Volts / If 0.4 Ampere / Indirect / Specified voltage AC/DC |
| Description |
Designed to operate with common, heater and B+, 28V supply. At 0V grid bias, 28V plates and screen grids, delivers 600mW across 1500 ohms plate-to-plate load.
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| Tube prices |
2 Tube prices (visible for members
only)
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| Information source |
Essential Characteristics, GE 1973
Taschenbuch zum Röhren-Codex 1948/49
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28D7: Internet
Miguel Angel Trujillo-Rodriguez
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28D7: rtt
Anonymous 10 Collector
More ...
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Just Qvigstad
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28D7: Sylvania Technical Manual
Peter Hoddow
More ...
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Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):12
Collection of
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