 |
| Identical to |
EF89
= 6DA6
= 6K4_China
|
| Similar
Tubes |
(different connections)
6EC7 (different connections)
W739 (different connections)
6F18 (different connections)
UF89 (Heater different)
6DG7 (other characteristic (electr. data))
EF89F (other class quality (otherw. equal))
|
| First Series |
1954 -- Collector info (Sammler) |
| First Source
(s) |
01.Feb.1954 : Funkschau (FS) # 3
Oct.1953 : Telefunken-Röhrenmitteilungen
|
| Predecessor Tubes |
EF85
EF41
|
|
| Base |
Noval, B9A
|
| Was used by |
Radio/TV-reception etc. |
| Filament |
-: Indirect /
-: Parallel / series AC/DC /
If: 0.2 Ampere /
Vf 6.3 Volts /
|
| Tube prices |
5 Tube prices (visible for members
only)
|
|
|
| |
|
| |
Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Karel De Reus
|
|
 |
|
EP
Ekkehard Pfau
|
|
RTT 1974 (Franzis) 13. Auflage
Martin Renz
|
|
Röhrenkartei der Funk-Technik
Iven Müller
|
|
 |