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Country:
United States of America (USA)
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Brand:
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Common type USA tube/semicond.
Philips Australia
Canadian Marconi Co. Ltd. (CMC, Esterline), Marconi's Wireless; Montreal, QC
Purotron, Raga AG; Zürich
Arcturus Radio Tube Co.; Newark, NJ
JRC, Johnsonburg Radio Corporation; Johnsonburg, PA
National Union Radio Corp.; Orange (NJ)
Philco, Philadelphia Stg. Batt. Co.; USA
Raytheon Mfg. Co.; Cambridge, MA
RCA (RCA Victor Co. Inc.); New York (NY)
Sylvania (Hygrade, GTE, Nilco); Emporium (PA)
Triad Television & Mfg. Co.; Pawtucket, RI
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| Tube type: |
Double Diode-Triode Audio Frequency |
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| Identical to |
85
= 285
= CV2549
= PH85
= NU-85
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| Similar
Tubes |
Other shape (e.g. bulb type):
G-85-S
Normally replaceable-slightly different:
38085
; 85AS
; G-85
Other class quality (otherwise equal):
NU-85AS
Heater different:
55
Other base:
6C7
; 6V7G
; 85M
; 85_Coronet
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| First Source
(s) |
1933 : The AWA Journal Vol. #7
Sep.1932 : -- Collector info (Sammler)
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| Predecessor Tubes |
55
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Successor Tubes
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6V7G
6R7G
6R7GT
6R7
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| Base |
6-Pin-Base U6A, old, USA (Codex=Ka)
Top contact with a cap.
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| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 6.3 Volts / If 0.3 Ampere / Indirect / Specified voltage AND current AC/DC |
| Description |
* RMA/JEDEC register record available by courtesy of TCA* - This tube was already listed by several manufacturers when RMA started its standardization in 1934. In order to characterize popular receiving types, manufacturers were asked to supply average characteristics as measured on production lots. Here are the filled answer forms supplied by Radio Valve Co., Raytheon, Sparton, Triad, Tung Sol, Ken Rad, Hytron and Arcturus. Full record is downloadable here.
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Dimensions (WHD)
incl. pins / tip |
x 115 x 37 mm / x 4.53 x 1.46 inch |
| Weight |
34 g / 1.20 oz |
| Tube prices |
2 Tube prices (visible for members
only)
|
| Information source |
Essential Characteristics, GE 1973
Tube Lore (II) p. 27 & 27 & 29
Röhrencodex , Röhren-Taschenbuch 1950 23000 Röhren
Taschenbuch zum Röhren-Codex 1948/49
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85: Sylvania Technical Manual
Peter Hoddow
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85: Telefunken Werkstattbuch
Wolfgang Bauer
More ...
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Just Qvigstad
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85: 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):511
Collection of
| Documents about this component |
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RMA qualification record for tube types 76, 77, 78, 6C6, 6D6, 75, 41, 42, 2A5, 85, 6F7, 80, 84 and 6A7. |
1569 KB |
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