| Country: |
United States of America (USA) |
|
Brand: |
Common type USA |
| |
Tube type: |
Pentagrid-Converter (Heptode) Pentagrid (new) |
|
Tube ID = 3720
|
 |
| Identical to |
6BA7
|
| Similar
Tubes |
6SB7Y (other base)
12BA7 (Heater different)
|
| First Source
(s) |
09.Jun.1948 : Electron Tube Registration List
|
| Predecessor Tubes |
6BE6
6SB7Y
|
|
| Base |
Noval, B9A
|
| Was used by |
Radio/TV-reception etc. |
| Filament |
-: Indirect /
-: Parallel / series AC/DC /
If: 0.3 Ampere /
Vf 6.3 Volts /
|
| Description |
USA
Text in other
languages (may
differ)
|
| Tube prices |
0 Tube prices (visible for members
only)
|
| Literature |
Essential Characteristics, GE 1973
|
|
|
| |
|
| |
Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Michael Schlör
|
|
 |
|
Collection JR
Jacob Roschy
|
|
RTT Schwandt
Günther Stabe
|
|
RCA Tube Manual
Peter Hoddow
|
|
 |