160m straight half wave dipole gain versus height Elevation plots   Height 2 meters Max gain -7.8 dBi straight up. Very low gain "bush antenna". Height 5 meters Max gain -0.4 dBi straight up. Low gain "bush antenna". Height 10 meters Max gain 4.6 dBi straight up. Reasonable gain NVIS antenna. Height 15 meters Max gain 6.5 dBi straight up. Fair NVIS antenna.   Height 20 meters Max gain 7.2 dBi straight up. Good NVIS antenna.   Height 25 meters Max gain 7.4 dBi straight up. Good NVIS antenna.       Height 30 meters Max gain 7.4 dBi straight up. Good NVIS antenna.   Height 35 meters Max gain 7.2 dBi straight up. Good NVIS antenna.   Height 40 meters Max gain 6.8 dBi at 75 degrees. Good NVIS and fair medium range antenna.   Height 45 meters Max gain 6.6 dBi at 60 degrees. Fair NVIS and fair medium range antenna.   Height 50 meters Max gain 6.5 dBi at 60 degrees. Fair NVIS and good medium range antenna. See 160m dipole impedance versus height here 2020-10-05 OH7SV Back to OH7SV project page