A MULTIPLE UNIT STEERABLE ANTENNA 



373 



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Fig. 25 — This plate, made immediately following that of Fig. 23, shows for com- 

 parison the manner in which the audio outputs add in two-station space diversity. 

 The angle monitor shows the 8.5- and 20.5-degree waves as before. Films 1 and 2 

 taken at 11:15 a.m., E.S.T., were obtained with rhombic antennas 1 and 6 (40 wave- 

 lengths apart). Films 3 and 4 taken at 11:20 were obtained with antennas 1 and 2 

 (8 wave-lengths apart). Note the second harmonic in film 2 particularly. GSE 

 (11,860 kilocycles) Daventry, February 21, 1936. Musical program. Zero delay. 



