| Country: |
United States of America (USA) |
|
Brand: |
Common type USA |
| |
Tube type: |
Pentagrid-Converter (Heptode) Pentagrid (old) Controlling (mu) |
|
Tube ID = 19219
|
 |
| Identical to |
1A7
|
| Similar
Tubes |
IW3 (can normally be replaced - small diff'ce)
|
|
| Base |
Octal (Int.Octal, IO) K8A, USA 1935 (Codex=Ut)
Top contact with a cap
|
| Was used by |
Radio/TV-reception etc. |
| Filament |
-: Direct /
-: Battery = /
If: 0.05 Ampere /
Vf 1.4 Volts /
|
| Description |
A metal tube 1A7 was never existing. Octal- battery tubes were only made as glas types (1A7G, 1A7GT). We list the 1A7 because some schematics list as 1A7.
Text in other
languages (may
differ)
|
| Literature |
Essential Characteristics, GE 1973
Taschenbuch zum Röhren-Codex 1948/49
|
|
|
| |
|
| |
Internet
Miguel Angel Trujillo-Rodriguez
|
|
|
|
C.M.
Mario Coelho
|
|
Tabu Röhren-Codex, 1948
Anonymous 15 Collector
|
|
|
