Labels:barrier reef | crt screen | earth | monitor | plant OCR: AWAY TOWARD 20 TOWARD AWAY 12 -16 L/x 0.49 0.50 0.5 0.52 19.5 FREQUENCY (MHz) Figure 14. Swept frequency performance of close-spaced two-element open-loop quad. Elements are of copper tubing and identical in length. The marked change in drive resistance characteristic of close-spaced arrays, and S not normally found at wide spacing This antenna performs quite well in small space.