| Country: |
United States of America (USA) |
|
Brand: |
Common type USA |
| |
Tube type: |
Pentagrid-Converter (Heptode) Pentagrid (old) Controlling (mu) |
|
Tube ID = 2651
|
 |
| Identical to |
2A7
= Ut-2A7
= ER2A7
|
| Similar
Tubes |
6A7 (Heater different)
Ut6A7 (Heater different)
Ut-6A7 (Heater different)
2A7S (other shape (e.g. bulb, size))
|
| First Series |
1933 Radios von gestern |
| Successor Tubes |
6A8
6A8G
|
|
| Base |
7-Pin-Base U7A = small, old, USA (Codex=Mh)
Top contact with a cap
|
| Was used by |
Radio/TV-reception etc. |
| Filament |
-: Indirect /
-: Parallel, (AC/DC) /
If: 0.8 Ampere /
Vf 2.5 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
Karel De Reus
|
|
|
|
Röhrensammlung
Wolfgang Bauer
|
|
Telefunken Werkstattbuch
Wolfgang Bauer
|
|
Cunningham Radiotron Manual
Peter Hoddow
|
|
|
