Antique radios, Old Time Radios
P1_Cossor
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Country:
Great Britain (UK)
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| Identical to |
P1_Cossor
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| Similar
Tubes |
Other characteristic (electr. data):
P2_Cossor
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| First Source
(s) |
1922 : Saga of the Vacuum Tube, Tyne p.375
1922 : British Radio Valves - The Vintage Years: 1904-1925 p.29,30
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| Base |
Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Eo)
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| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 3.5 Volts / If 0.7 Ampere / Direct / Battery = |
| Description |
Vademecum is in error: not 0.085 A, and not equivalent to RE074!
Plain top. For AF amplification and Detector.
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| Tube prices |
1 Tube prices (visible for members
only)
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| Information source |
Saga of the Vacuum Tube, Tyne 1925 Brown Brothers Catalog 217
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P1_Cossor: Fin Stewart
Fin Stewart
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Just Qvigstad
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P1_Cossor: Banneitz, TB der drahtl. Teleph. 1927
Anonymous 15 Collector
More ...
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Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):1
Collection of
Collection of a member from D |
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Forum contributions about this tube
P1_Cossor
Threads: 1 | Posts: 1
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Hits: 2147 Replies: 0
P1_Cossor (P1_Cossor)
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Adalbert Gebhart
15.Jun.15
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1
Good evening
I just found a tube that looks much like a Cossor P1 in an original Cossor P-Type box,
printed "P.1." on it.
The tube has the typical Cossor tin-hat anode and is obviously a bright emitter
(see picture @3,5V/0,8A). It has no coloured spot.
However, it differs from other Cossor P1 tubes in some respect:
1. It has a one-sided metal mirror inside - most of the others don't
2. It has a black socket instead of a brown one
3. There is no type information etched in the glass dome.
4. However it has etched in the glas dome: "VALCO Ltd. REPAIRED Wimbledon" (see pictures)
Maybe our english colleagues have information about this repair company and wether it might be a P1 despite of the differences.
Best regards
Adalbert Gebhart
Attachments
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P1_Cossor
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