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ER_MoorheadTallPlate

Information - Hilfe 
ID = 68912
       
Land:
USA
Marke: Moorhead Laboratories (Pacific); San Francisco
Entwickler: Moorhead Laboratories (Pacific); San Francisco 
Typ:  Triode (Hoch-) Vakuum   Niederfrequenz 
  <1925 sehr selten. ***
Identisch mit ER_MoorheadTallPlate

Sockel USA-UV-4-Stift-Sockel+Bayonet, ab 1914
Anwender Radio/TV-Empfang etc.
Heizung Uf 4 Volt / If 0.7 Ampere / Direkt / Batterieheizung =
Beschreibung

This tube is the first based ER type and was introduced in the middle of 1920. The anode was aluminium, and this was held in place by two extensions which went down to the press, (fitting the press like a "splint" to give support. Later tubes have a nickel anode half the height. The grid was of spiral copper wire. The base was made by the Shaw Insulator Company which was associated with Moorhead Laboratories. This was a soft tube.

 
Abmessungen (BHT)
inkl. Stifte/Spitzli
x 106 x 44 mm / x 4.17 x 1.73 inch
Literatur Schémathèque Toute la Radio (STR)   
-- Collector info (Sammler)   

uv~~91.png ER_MoorheadTallPlate: Fin Stewart
Fin Stewart


Just Qvigstad

Sammlung von

 
moorheadlp.jpg

ER_MoorheadTallPlate
 

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