REFLEX OSCILLATORS 



589 



a large mechanical amplitication of the expansion of the tuner. The tuner 

 is made as long as will fit conveniently into the tube envelope. Further 

 arbitrary decisions are required with regard to the power which can be ex- 



5 

 O 



o 

 a. 22 



O 18 



50 100 150 200 250 300 350 400 450 500 550 600 650 700 



TEMP2RATURE IN DEGREES CENTIGRADE 



Fig. 83. — A family of deflection vs temperature characteristics for the type of tuning 

 mechanism used in the W.E. 2K45. The parameter is the initial oflset of the bows from 

 the channel at room temperature. 



pended in operating the tuner. \\ ith such decisions made, the tuner design 

 can then be completed as a compromise of a great many variables. Limita- 

 tions on the strength of the tuner materials at elevated tetnperatures deter- 



