Antique radios, Old Time Radios
31
|
Country:
United States of America (USA)
|
|
Brand:
|
|
| Tube type: |
Triode, vacuum Power/Output |
|
| Identical to |
31
= VT-31
= CX331
= 231
= RCA231
= CV947
= PH231
= 131
= 431
= ER31
= ER231
= C-231
= NU-31
= NX-231
|
| Similar
Tubes |
Normally replaceable-slightly different:
38031
; FP60
|
| First year |
1930
Radios von gestern, 2. Auflage
|
| First Source
(s) |
Sep.1930 : -- Collector info (Sammler)
|
|
|
|
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