A'. I Did sn;x.i/j.yc svsrr.M 



533 



only when the vacuum tube fihuiient burns out or the tube is removed 

 from its socket. In order to indicate when the power is turned on the 

 receiver there is another hunp (green) mounted on the panel and con- 

 nected across the 110 volt direct current line on the receiver side of 

 the main switch so that when the switch is closed the lamp will light. 

 In the alternating current type of receiver the hlaments of the 



Fig. 3-Exterior view of receh-ing set. (The external appearance of the A.C. and 



U.C. models is the same) 



Fig. 4 \-iew of A.C. model receiver showing tuning conlrols, and selector, and 



rectifying apparatus 



