ULTRA-HIGH-FREQUENCY POWER AMPLIFIER 



25 



The desire to reduce the length of all leads to a minimum has 

 naturally resulted in bringing the tuned circuits rather close to the 

 sides of the circuit housings. Nevertheless care and attention to 



Fig. 12 — An experimental two-stage one-meter amplifier using two of the earlier 

 type push-pull pentode tubes. 



detail in the circuit design have enabled the stray capacities to be kept 

 down to satisfactory values. Fig. 13 shows in'schematic form one of 



0.025 MH 



150 MMF 



50MMF 



0.025 MH 



3.8 --l- 



MMF-J-- 

 I 



-7- I 

 I 

 I 



3.8 _!.. 

 MMF-r- 

 I 

 I 

 I 



^75M^ 



0.025 MH 



.0.02 

 'MMF 



Fig. 13 — Diagram of interstage circuit. 



these circuits employed as the interstage circuit between two of these 

 push-pull pentodes, all of the important inductances and capacities 

 being included. 



