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ER551

Information - Help 
ID = 72621
       
Country:
United States of America (USA)
Brand: Eveready (Ever Ready), AENMC / National Carbon Company (NCC); Columbia
Tube type:  Screen-grid Tetrode   RF/IF-Stage 
Identical to ER551 = 551
Similar Tubes
Normally replaceable-slightly different:
  235 ; 435 ; C335 ; SY235 ; UY235

Base UY-Base, 5 Pins (USA, April 1927) Top contact with a cap
Was used by Radio/TV-reception etc.
Filament Vf 2.5 Volts / If 1.7 Ampere / Indirect / Parallel, (AC/DC)
Dimensions (WHD)
incl. pins / tip
x 123 x 45 mm / x 4.84 x 1.77 inch
Weight 50 g / 1.76 oz
 
er551_raytheon.jpg
ER551: JV
Jay Vonderhey

 
551_so~~2.png
ER551: Peter den Boer
Fin Stewart

 

from Just Qvigstad


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