FOUR-POLE ADMITTANCES OF MICROWAVE TRIODES 649 



STANDING WAVE 

 DETECTOR 



OHMMETER 



SPACINGS 



MICROMETER 

 NO. 1 



CONDENSER 



/^ j OHMMETER 



MICROMETER 

 NO. 2 



Fig. 1 — Apparatus for measuring passive admittances of triode. 



