Antique radios, Old Time Radios
3B/501A
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Country:
Great Britain (UK)
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| Identical to |
3B/501A
= CV49
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| Similar
Tubes |
Normally replaceable-slightly different:
4C25
; 54
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| Base |
UX-Base (4 Pins (2 thick, USA 1924, UX) (Codex=Bt)
Sidecontact and top contact.
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| Filament |
Vf 5 Volts / If 5.15 Ampere / Direct |
| Description |
VHF transmitting triode. Thoriated tungsten filament. Grid and plate pins.
50W plate dissipation, 3KV max plate voltage at 150mA max, gain 27. Up to 200MHz max full-ratings operating frequency.
Very similar to 4C25 or 54.
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| Information source |
Taschenbuch zum Röhren-Codex 1948/49
Tube Lore (I)
-- Original-techn. papers.
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3B/501A: Manufacturer's Literature
Emilio Ciardiello
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Just Qvigstad
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