Experimental Cathode Ray Commutator Tube PN34
              Tube cathodique commutateur
              Kathodenstrahl-Schalterröhre
			  Marking: PN34 1532 P94-20977.
              Possibly made by Western Electric.
              This tube seems to operate on the same principle as the Cyclophon (US Patent 2474810 Multichannel Cyclophon, Federal Telecommunication Laboratories 5738 Commutator Tube).
              24 target anodes.
			   
			  
			  Longueur • Length • Länge : 32 cm • 12"5/8
              Diamètre • Diameter • Durchmesser : 56 / 89 mm • 2"1/4 / 3"1/2
              
              
              
              
               
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