Antique radios, Old Time Radios
DL7_deForest
|
Country:
United States of America (USA)
|
|
| Identical to |
DL7_deForest
|
| Similar
Tubes |
Normally replaceable-slightly different:
C603
|
| First year |
1926
??
Saga of the Vacuum Tube, Tyne Seite 301
|
| First Source
(s) |
Aug.1930 : Philips Bulletin R1164, p. 32
|
| Base |
UX-Base (4 Pins (2 thick, USA 1924, UX)
|
| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 5 Volts / If 0.5 Ampere / Direct / Battery = |
| Description |
Plate voltage 135. First made 1926 with a black bakelite base. This was changed to "Isolantite" (a type of ceramic) in 1927 and the tube was discontinued in 1928. The bulb diameter was increased to 44 mm late in 1927.
|
Dimensions (WHD)
incl. pins / tip |
34 x 107 x mm / 1.34 x 4.21 x inch |
| Information source |
Saga of the Vacuum Tube, Tyne Page 301 & 305
|
|
DL7_deForest: Fin Stewart
Fin Stewart
|
Just Qvigstad
|
|
Collection of
|
|
|
|
You reach this tube or valve page from a search
after clicking the "tubes" tab or by clicking a tube
on a radio model page. You will find thousands
of tubes or valves with interesting links. You
even can look up radio models with a certain tube
line up.
[rmxtube-en]
| Data Compliance |
More Information |
|
|
|
