CM N6LF Extended Double Zepp, by K6STI CE SY L1 = 85 ft 'SY L2 = 25 ft ' original K6STI SY L2 = 24.5 ft ' Even better SY H = 80 ft GW 1 9 0 L1 H 0 L2 H #14 GW 2 9 0 L2 H 0 -L2 H #14 GW 3 9 0 -L2 H 0 -L1 H #14 GE 1 EX 0 2 5 00 1.0 0.0 SY C = 9.1 pf LD 1 1 9 0 0 0 C LD 1 3 1 0 0 0 C ' GN 0 0 0 0 13 .005 FR 0 1 0 0 7.15 EN 'This design has much lower sidelobes than an ordinary extended double zepp and 'exhibits a purely resistive input impedance. These improvements cost just a 'couple tenths of a dB forward gain.