By permission of Marconi's Wireless Telegraph Co., Ltd. 



CARNARVON MARCONI WIRELESS STATION AERIAL SYSTEM 



This great aerial system consists of a multiple wire aerial carried on ten steel masts. Each of the masts in the photograph is 400 

 feet high. Electric current of about 500 horse-power is conveyed to this station by overhead power lines. This station sends wireless 

 messages to a station in the United States at New Jersey. 



From this station last year messages were transmitted direct to Australia, without the intermediary of any relay station. 



FIG. 7. DOT AND DASH IN WAVES 



Dots and Dashes, the essence of the Morse Code, are better called 

 shorts and longs. As we see in the diagram a short train of waves, 

 giving rise to a short note in the receiver's telephone, is the equivalent 

 of a dot. A longer train, causing a longer note in the telephone, is a 

 dash. By suitable combinations of such notes (Morse Code) any 

 message can be received. 



