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BELL SYSTEM TECHNICAL JOURNAL 



as 32,200 cycles and next as 59,500 cycles, which is the frequency trans- 

 mitted. 



Fig. 7 gives us in contrast one of the short wave sending antennae. 

 This particular one is for a wave of 22 meters wave-length, that is. 





Fig. 7 — Deal Beach sending antennae 



about 70 feet, corresponding to a frequency of around 14,000,000 cycles. 

 These shorter wave-lengths lend themselves readily to directional 

 sending and the resultant possibilities of conserving power in that way. 

 The form of antenna shown is essentially a group of vertical antennae 

 with a transmission line connecting at points of equal phase. With 

 this particular antenna, energy received in England is increased by 



