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Country:
United States of America (USA)
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Brand:
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Common type USA tube/semicond.
Rogers-Majestic, Standard Radio Manufacturing, Rogers Radio Tubes; Toronto
CeCo (tubes), C.E. Mfg. Co. Inc.; Providence, RI
Kellogg Switchboard & Supply Co.; Chicago (IL)
Marvin Radio Tube Company; Irvington, NJ
McCullough, Frederick, S. Co.; Wilkinsburg, later Sales Company; Pittsburg
National Union Radio Corp.; Orange (NJ)
Philmore Mfg. Co. - Ajax Products Co.; New York, NY
Silvertone (tubes) - see also Sears; Chicago, IL
Sonatron Tube Company; Chicago and New York
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| Developer: |
McCullough, Frederick, S. Co.; Wilkinsburg, later Sales Company; Pittsburg |
| Tube type: |
Triode, vacuum Universal |
| |
Ca. 1925 up to 1945 rare. |
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| Identical to |
401_McCullough
= 225A
= X401
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| Similar
Tubes |
Normally replaceable-slightly different:
R401
Different connections:
401_Hytron
; RY401
|
| First year |
1926
Saga of the Vacuum Tube, Tyne
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| First Source
(s) |
25.Jul.1925 : Saga of the Vacuum Tube, Tyne
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| Predecessor Tubes |
400_McCullough-3volt
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Successor Tubes
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227
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| Base |
UX-Base (4 Pins (2 thick, USA 1924, UX) (Codex=Bo)
2 Top contacts.
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| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 3 Volts / If 1 Ampere / Indirect / Specified voltage AC/DC |
| Description |
Made by Kellogg for McCullough Sales Co.(McCullough was the inventor). Later (from 1929 on) manufactured by A.C.Neon Corp. of N.Y.City.
Very early AC tube. Battery set could be upgraded without deep modification, since the filament terminals were overhead, apart from the Chassis and its wiring.
Codex lists other 400' types, but not this AC type with indirect heated filament. The AC type 401 was made/sold by McCullough, Kellogg, Marathon, Marvin, and Sovereigh.
Text in other
languages (may
differ)
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Dimensions (WHD)
incl. pins / tip |
42 x 135 x mm / 1.65 x 5.31 x inch |
| Weight |
52 g / 1.83 oz |
| Tube prices |
1 Tube prices (visible for members
only)
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| Information source |
Saga of the Vacuum Tube, Tyne Radio News
Tube Lore (II) p. 33
-- Collector info (Sammler)
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401_McCullough: leaflet with tube
Otto Frosinn
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401_McCullough: O.F.
Otto Frosinn
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Just Qvigstad
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401_McCullough: Vintage Electronic catalog
Geri Meier
More ...
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Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):15
Collection of
Collection of a member from D |
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