Antique radios, Old Time Radios
R81_USA
|
Country:
United States of America (USA)
|
|
| Identical to |
R81_USA
= AC81
= G81
= UX281
= CX381
|
| Similar
Tubes |
Normally replaceable-slightly different:
281
; 81
; R281
|
| First Source
(s) |
1928 : Saga of the Vacuum Tube, Tyne p.344
|
| Base |
UX-Base (4 Pins (2 thick, USA 1924, UX)
|
| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 7.5 Volts / If 1.25 Ampere / Direct / Specified voltage AC/DC |
| Description |
Tube also made by the National Radio Tube co of San Francisco.
|
Dimensions (WHD)
incl. pins / tip |
x 145 x 62 mm / x 5.71 x 2.44 inch |
| Weight |
63 g / 2.22 oz |
|
R81_USA: ARRL Handbook 1972
Anonymous 10 Collector
|
Just Qvigstad
|
|
Collection of
|
|
|
|
You reach this tube or valve page from a search
after clicking the "tubes" tab or by clicking a tube
on a radio model page. You will find thousands
of tubes or valves with interesting links. You
even can look up radio models with a certain tube
line up.
[rmxtube-en]
| Data Compliance |
More Information |
|
|
|
