| Identical to |
47 = P2 = 247 = PZ = UY-247 =
A247 = VT-47 = PH247 = RES347 |
| Similar Tubes |
1610_RCA (other class quality
(otherw. equal)) 47E (can normally
be replaced - small diff'ce) |
| First Series |
1931 Radios von gestern |
| First Source (s) |
Jun.1931 : -- Collector info
(Sammler) |
| Successor Tubes |
1932 2A5 42 |
|
| Base |
UY-Base, 5 Pins
(USA, April 1927) (Codex=Hy) |
| Filament |
-: Direct / -:
Parallel, (AC/DC) / If: 1.7 Ampere /
Vf 2.5 Volts / |
| Tube prices |
0 Tube prices (visible for
members only) |
| Literature |
Essential Characteristics, GE
1973
Taschenbuch zum Röhren-Codex
1948/49 |
