| Country: |
United States of America (USA) |
|
Brand: |
Common type USA |
| |
Tube type: |
Pentagrid-Converter (Heptode) Pentagrid (old) Controlling (mu) |
|
Tube ID = 3904
|
 |
| Identical to |
1A6
|
| Similar
Tubes |
1D7G (other base)
|
| First Source
(s) |
Aug.1933 : The AWA Review Vol.7
|
|
| Base |
6-Pin-Base U6A, old, USA (Codex=Ko)
|
| Was used by |
Radio/TV-reception etc. |
| Filament |
-: Direct /
-: Battery = /
If: 0.06 Ampere /
Vf 2 Volts /
|
| Tube prices |
0 Tube prices (visible for members
only)
|
| Literature |
Essential Characteristics, GE 1973
Taschenbuch zum Röhren-Codex 1948/49
|
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| |
|
| |
Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Karel De Reus
|
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|
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Collection JR
Jacob Roschy
|
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Telefunken Werkstattbuch
Wolfgang Bauer
|
|
Grundig Rö-Tabu, zum M1, Band 3, 1948
Anonymous 15 Collector
|
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