Please click your language flag. Bitte Sprachflagge klicken.


Information - Help 
ID = 50766
United States of America (USA)
Brand: Moorhead Laboratories (Pacific); San Francisco
Developer: Moorhead Laboratories (Pacific); San Francisco 
Tube type:  Triode, vacuum   Power/Output 
  <1925 very rare. ***
Identical to VT32_Moorhead
Similar Tubes
Other shape (e.g. bulb type):
  R_Moorhead ; R_Moorhead_H
First year 1918 ? Saga of the Vacuum Tube, Tyne page 171.
Predecessor Tubes R_Moorhead  

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914
Was used by Military and/or Government
Filament Vf 6 Volts / If 0.85 Ampere / Direct / Battery =

The VT 32 was supplied to the British Government and is electrically the same as the British R, but uses a tubular bulb shape and does not have a serial number. Earlier versions of the tube were spherical with an R stamped on the glass bulb. In these the element assembly was vertical. In the VT32 they were horizontal. The letters VT stood for Valve Transmitting - so named and as used by the British military.

Dimensions (WHD)
incl. pins / tip
x 112 x 45 mm / x 4.41 x 1.77 inch
Weight 54 g / 1.90 oz
Tube prices 2 Tube prices (visible for members only)
Information source Saga of the Vacuum Tube, Tyne   Page 170
70 Years of Radiotubes and V.   Pages 26 & 27
Tube Lore (II)

b4_1~~72.png VT32_Moorhead: Fin Stewart
Fin Stewart

Just Qvigstad

Collection of



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]