Hy-Gain 174BA 18.100 MHz 4 elements, inches 3.5000 1.2500 1.1250 0.8750 0.6250 0.4375 0.000 3.6250 41.8750 46.0000 25.0000 24.0000 30.7500 97.500 3.6250 32.3750 46.0000 25.0000 24.0000 29.5000 168.000 3.6250 18.3750 46.0000 25.0000 24.0000 36.5000 244.000 3.6250 14.1250 46.0000 25.0000 24.0000 35.7500 This design is a modification of the HG204BA. It was developed by Hy-Gain engineer Roger Cox using YO 3.0 (MININEC calibration).