HORIZONTAL RHOMBIC ANTENNAS 



155 



Fig. 19 — Experimental equipment for coupling a rhombic antenna to a concentric 



pipe transmission line. 



12 14 16 18 20 22 



FREQUENCY IN MEGACYCLES PER SECOND 



Fig. 20 — Loss versus frequency of the experimental coupling equipment, shown in 

 Fig. 19, when used to connect an antenna balanced impedance of 778 ohms in parallel 

 with 5 mmf. to a pipe-line unbalanced resistance of 80 ohms. 



