THE TYPE PI CARRIER SYSTEM 



379 



close-up of the bottom of the rectifier chassis which shows the regulating 

 network mounted on a printed wiring board. 



6.2 Air Cell Primary Battery Plant 



Because ac will not be readily available at all remote locations, an 

 alternate power supply has been de^•eloped and this is shown in Fig. 25. 



PI aoj volts 



Fig. 2-i — Close-up of Ijottom of rectifier chassis. 



