radiomuseum.org

 
Please click your language flag. Bitte Sprachflagge klicken.

78_Coronet

Information - Help 
ID = 73240
       
Country:
United States of America (USA)
Brand: Arcturus Radio Tube Co.; Newark, NJ
Developer: Arcturus Radio Tube Co.; Newark, NJ 
Tube type:  Vacuum Pentode   RF/IF-Stage   Controlling (mu) 
Identical to 78_Coronet
Similar Tubes
Other base:
  78

Base Octal (Int.Octal, IO) K8A, USA 1935 Top contact with a cap.
Was used by Radio/TV-reception etc.
Filament Vf 6.3 Volts / If 0.3 Ampere / Indirect / Parallel / series AC/DC
Description

The Arcturus metal/glass type 78 tube was unusual in that it employed a glass disc instead of the conventional "pinch" for introduction of the lead-in wires into the glass bulb. The disc has the wires in a circular formation. The base is octal but an adaptor was sold with the tube to enable it to fit the normal U6A 6-pin tube socket. The adaptor measures 37 mm long, including pins, and is 30 mm diameter.

 
Dimensions (WHD)
incl. pins / tip
x 82 x 32 mm / x 3.23 x 1.26 inch
Weight 46 g / 1.62 oz
Information source 70 Years of Radiotubes and V.   Pages 99 & 100
-- Collector info (Sammler)   
 
arcturus_coronet_78_e816.jpg
78_Coronet: Ebay item August 2016
Fin Stewart

 

from Just Qvigstad

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