| Country: |
United States of America (USA) |
|
Brand: |
Common type USA |
| |
Tube type: |
Double Diode-Triode Audio Frequency |
|
Tube ID = 2986
|
 |
| Identical to |
6SQ7
= CV1991
= 6g2
= 6r17b
= VT-103
|
| Similar
Tubes |
6SQ7GT (other shape (e.g. bulb, size))
75 (other base)
CV1990 (Multiple differences or of other kind)
2A6 (Other base and other base diagram)
7B6 (other base)
OSW3105 (other shape (e.g. bulb, size))
6Z-DH3A (other base)
6ZDH3A (other base)
3105_OSW (other shape (e.g. bulb, size))
12SQ7 (Heater different)
6SQ7-M (other shape (e.g. bulb, size))
|
| First Series |
1939 -- Collector info (Sammler) |
| First Source
(s) |
07.Oct.1938 : Electron Tube Registration List
|
| Predecessor Tubes |
6Q7
6B6
|
| Successor Tubes |
6AT6
6AV6
7B6
|
|
| Base |
Octal (Int.Octal, IO) K8A, USA 1935 (Codex=Vk)
|
| Was used by |
Radio/TV-reception etc. |
| Filament |
-: Indirect /
-: Parallel / series AC/DC /
If: 0.3 Ampere /
Vf 6.3 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
Michael Schlör
|
|
 |
|
collection JR
Jacob Roschy
|
|
Telefunken Werkstattbuch
Wolfgang Bauer
|
|
SEL Handbuch 1964
Peter Hoddow
|
|
 |