radiomuseum.org

 
Please click your language flag. Bitte Sprachflagge klicken.

688

Information - Help 
ID = 41448
       
Country:
United States of America (USA)
Brand: Cunningham Inc., E.T.; Harrison (NJ)
Tube type:  Photocell Gas filled 
Identical to 688
First year 1932 Radio News Sep 1932

Base UX-Base (4 Pins (2 thick, USA 1924, UX)
Filament No heater
Description Peak sensitivity at 3500 Angström. 45 microamps-lumen. 
Dimensions (WHD)
incl. pins / tip
30 x 107 x mm / 1.18 x 4.21 x inch
Literature - - -   
- - -   
- - -
- - -
 

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]
  
rmXorg