Antique radios, Old Time Radios
239A
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Country:
United States of America (USA)
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| Identical to |
239A
|
| Similar
Tubes |
Normally replaceable-slightly different:
215A
; 215A_Nissl
; 4239A
; TB-614-A
|
| First Source
(s) |
1927 : Saga of the Vacuum Tube, Tyne p.295
|
| Base |
UX-Base (4 Pins (2 thick, USA 1924, UX)
|
| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 1.25 Volts / If 0.27 Ampere / Direct / Battery = |
| Description |
For applications where low response to mechanical shock was all-important. Low noise and microphonic 215A, was intended for condenser-mic. preamplifiers.
|
Dimensions (WHD)
incl. pins / tip |
x 90 x 25 mm / x 3.54 x 0.98 inch |
| Weight |
29 g / 1.02 oz |
| Information source |
Tube Lore (I)
Tube Lore (II) p. 236
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|
239A: KoBi
Konrad Birkner † 12.08.2014
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Just Qvigstad
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Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):3
Collection of
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