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R281

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ID = 85044
       
Country:
United States of America (USA)
Brand: Common type USA tube/semicond.
Tube type:  Half-Wave Vacuum Rectifier   Power-supply 
Identical to R281
Similar Tubes
Normally replaceable-slightly different:
  1562_UX4-pin ; 281 ; 81 ; R81_USA ; UX281
Other base:
  R10M

Base UX-Base (4 Pins (2 thick, USA 1924, UX)
Was used by Radio/TV-reception etc.
Filament Vf 7.5 Volts / If 1.2 Ampere / Direct / Specified voltage AC/DC

r281_connections.png R281: My book.
Pier Antonio Aluffi

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Just Qvigstad
r_281_characteristics.png
R281: My book
Pier Antonio Aluffi

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