 |
| Identical to |
CV455
= 12AT7
= ECC81
|
| Similar
Tubes |
12AT7WA (other class quality (otherw. equal))
CV4024 (other class quality (otherw. equal))
12AT7WC (other class quality (otherw. equal))
12AT7WB (other class quality (otherw. equal))
|
|
| Base |
Noval, B9A
|
| Filament |
-: Indirect /
-: Parallel, (AC/DC) /
|
| Literature |
-- Collector info (Sammler)
-- Original-techn. papers.
|
|
|
|
 |
|
JB
Jozef Brughmans
|
|
ARRL Handbook 1972
Michael Schlör
|
|
 |