If this is the 15M532 [5-elements on a 32' boom], then the settings are: FQ R DE D1 D2 D3 21.000 74 67.25 59.25 55.5 53.25 21.030 73.75 67 59 55.25 53 21.160 72.75 66 58 54.25 52 21.300 71.75 65 57 53.25 51 21.370 71.25 64.25 56.5 52.75 50.5 These are directly from the Telrex manual. Don N8DE