| Country: |
United States of America (USA) |
|
Brand: |
Common type USA |
| |
Tube type: |
Beam Power Tube |
|
Tube ID = 2990
|
 |
| Identical to |
7A5
|
| Similar
Tubes |
35A5 (Heater different)
|
| First Source
(s) |
04.May.1939 : Electron Tube Registration List
|
|
| Base |
Loctal-8, B8G (Sylvania, 1938) (Codex=Wdb)
|
| Was used by |
Radio/TV-reception etc. |
| Filament |
-: Indirect /
-: Parallel, (AC/DC) /
If: 0.75 Ampere /
Vf 6.3 Volts /
|
| Tube prices |
0 Tube prices (visible for members
only)
|
| Literature |
Essential Characteristics, GE 1973
Taschenbuch zum Röhren-Codex 1948/49
|
|
|
| |
|
| |
Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Michael Schlör
|
|
|
|
scc
Christian Schaufelberger
|
|
Telefunken Werkstattbuch
Wolfgang Bauer
|
|
Sylvania Technical Manual
Peter Hoddow
|
|
|
