80m full wave horizontal loop gain versus height   Height 2 meters Max gain -2.5 dBi straight up. Very low gain "bush antenna". Height 5 meters Max gain 3.56 dBi straight up. Low gain NVIS antenna. Height 10 meters Max gain 7.1 dBi straight up. Good NVIS antenna. Height 15 meters Max gain 7.5 dBi straight up. Good NVIS antenna.   Height 20 meters Max gain 7.1 dBi straight up. Good NVIS antenna.   Height 25 meters Max gain 6.0 dBi at 65 degrees. Good NVIS and fair medium range antenna.       Height 30 meters Max gain 6.6 dBi at 45 degrees. Fair NVIS and good medium range antenna.   Height 35 meters Max gain 6.2 dBi at 35 degrees. Poor NVIS, fair long range antenna.   Height 40 meters Max gain 6.9 dBi at 30 degrees. Very bad NVIS, good long range antenna.   Height 45 meters Max gain 7.2 dBi at 25 degrees. Poor NVIS, good long range antenna. See 80m full wave loop impedance versus height here 2021-04-25 OH7SV Back to OH7SV project page