| Country: |
United States of America (USA) |
|
Brand: |
Common type USA |
| |
Tube type: |
HEPTODE |
|
Tube ID = 8533
|
 |
| Identical to |
1B7
|
|
| Base |
Octal (Int.Octal, IO) K8A, USA 1935 (Codex=UT)
|
| Filament |
If: 0.1 Ampere /
Vf 1.4 Volts /
|
| Literature |
Taschenbuch zum Röhren-Codex 1948/49
|
|
|
| |
|
| |
Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Karel De Reus
|
|
|
|
Telefunken Werkstattbuch
Wolfgang Bauer
|
|
Grundig Rö-Tabu, zum M1, Band 3, 1948
Anonymous 15 Collector
|
|
|
