| Country: |
United States of America (USA) |
|
Brand: |
Common type USA |
| |
Tube type: |
Double Diode-Triode Audio Frequency |
|
Tube ID = 2948
|
 |
| Identical to |
12AT6
= HBC90
= 12DT1
|
| Similar
Tubes |
6AT6 (Heater different)
14AT6 (Multiple differences or of other kind)
|
| First Series |
1946 -- Collector info (Sammler) |
| First Source
(s) |
25.Oct.1945 : Electron Tube Registration List
|
| Predecessor Tubes |
12SQ7
12SQ7GT
14B6
12Q7GT
|
| Successor Tubes |
12AV6
|
|
| Base |
Miniatur-7-Pin-Base B7G, USA 1940 (Codex=Zk)
|
| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 12.6 Volts / If: 0.15 Ampere / -: Indirect / -: Series, AC/DC / |
| Description |
= HBC90
Text in other
languages (may
differ)
|
| 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
|
|
RCA Tube Manual
Peter Hoddow
|
|
 |