Antique radios, Old Time Radios
244A
|
Country:
United States of America (USA)
|
|
| Identical to |
244A
= MY227
|
| Similar
Tubes |
Other characteristic (electr. data):
UY227
Other base and data slightly different:
247A
|
| First Source
(s) |
1929 : Saga of the Vacuum Tube, Tyne
|
|
Successor Tubes
|
285A
|
| Base |
UY-Base, 5 Pins (USA, April 1927)
|
| Filament |
Vf 2 Volts / If 1.6 Ampere / Indirect / Specified voltage AC/DC |
| Description |
Mu 10, Gm 0.5 to 1.2mS; low microphonics and sputter noise. Intended for low-level audio preamplifier applications.
Improved, low-noise substitution for UY227.
|
| Information source |
Babani, International Radio Tube Encyclopaedia W.E.Greybar catalog 1933
- - Manufacturers Literature
Tube Lore (I)
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|
|
 |
|
244A: KoBi
Konrad Birkner † 12.08.2014
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| |
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244A: KoBi
Konrad Birkner † 12.08.2014
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244A: KoBi
Konrad Birkner † 12.08.2014
|
from Just Qvigstad
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|
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):1
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