Antique radios, Old Time Radios
18
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Country:
United States of America (USA)
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| Identical to |
18
= 118_pent
= 218_pent
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| Similar
Tubes |
Normally replaceable-slightly different:
18E
; KR18
Heater different:
42
Other base:
14F6
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| First Source
(s) |
May.1933 : L'Histoire Singulière du Tube Radio; G. Duperray 2009
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Successor Tubes
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14F6
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| Base |
6-Pin-Base U6A, old, USA (Codex=Kdo)
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| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 14 Volts / If 0.3 Ampere / Indirect / Specified current AC/DC ~ = (Series working) |
| Description |
Maximum ratings : Va = 375 V, Vg2 = 285 V, Pa =11 W, Pg2 = 3,75 W; Vf/k = 90 V;
Class A1 operation: Va = 250 V; Vg2 = 250 V; Vg1 = -16,5 V; Ia = 34...36 mA; Ig2 = 6,5...10,5 mA; S = 2,5 mA/V; Ri = 80 k Ohms; Ra = 7 k Ohms; Rk = 410 Ohms; Po = 3,2 W; Vi = 16,5 V-eff; d-tot= 8 %
With exception of heater ratings and base, see more data under 6F6G. [JR]
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Dimensions (WHD)
incl. pins / tip |
x 103 x 38 mm / x 4.06 x 1.50 inch |
| Weight |
34 g / 1.20 oz |
| Tube prices |
1 Tube prices (visible for members
only)
|
| Information source |
Tube Lore (II) p. 26
Babani, International Radio Tube Encyclopaedia p. 20 & 21
Taschenbuch zum Röhren-Codex 1948/49
Röhrencodex , Röhren-Taschenbuch 1950 23000 Röhren
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18: Internet
Miguel Angel Trujillo-Rodriguez
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18: Telefunken Werkstattbuch
Wolfgang Bauer
More ...
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Just Qvigstad
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18: various sources
Jacob Roschy
More ...
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Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):20
Collection of
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