WAVKni'IDK AS A COMMI^XICATIOX MKDIUM 



1221 



receiver, the wavegui(l(> line was short-circuited at both ends. The in- 

 jected • 10 microsecond pulse occupied at any instant a space interval of 

 100 feet and lIuM-eforc this pulse, wiiile travellinj»; from one end to tiie 

 other between the siiort circuits, iJioduccd :il the receiver coujjlinji; hole 

 spurts of energy corresponding to the time when the pulse ])asscd the 

 sending end. Each such pulse passing through the receiver (•()ui)liiig hole 

 was am])lified, detected, and placed as a \-crtical deflection on the oscil- 

 loscope. The horizontal d(>flcction on the ()S('illosco])e was a linear time 



Fig. 9 — Experimon(;il wavoKuido installutioii, 5" diainclor lloliiulcl Hue 



