248 



PIERCE. 



see how much reliance may be placed in antenna resistance measure- 

 ments made by buzzer methods oF excitation in comparison with 

 measurements made by excitation with gaseous oscillators and other 

 methods of continuous excitation. 



400 800 



1200 



X 



1600 2000 R400 



Figure 16. Total radiation resistance versus wavelength for the Antenna 

 of the Battleship "Maine." Black dots are Dr. Austin's observed values; 

 heavy line, computations by present theory; light line, computations by 

 doublet theory. 



25. Example of Different Methods of Constructing an 

 Antenna that Will Have a Specified Resistance for a Given 

 Wavelength. — Let it be required to construct an antenna that will 

 have a given resistance (4 ohms, say) for a given wavelength (2000 



