PA0O ham radio

28MHz  5/8 wave base  6m a.g.  vertical aluminium tube 20mm 2m50 and a fishing rod with shunted 1.5mm2 wire total length 6,4meter = 0.64 x wave   Base of former CB 1/2wave or  5/8wave used with external coil 3 wgd  ( 1 wdg in the socket) The original coil is removed ( 5+3 wdg 32mm close wound) 3wdg gave best matching using 2 radial wires 1:1.6   got 1:1.2 when 1 radial hanging vertical down... results are very good in compare with the higher h-dipole although the groundwave of DB0PBS at 50km only is received on the dipole. Other signals over iono Es gave comparable snr sometimes even better      The impedance of a 5/8 wave vertical is given as (75 -425j) Ω    needed is XL  +425j to balance out the capacitive -425 Rothammel  say  2.3uH for D/d=4000  the ratio of lenght and conductor diameter does have influence on the inductance the thinner the conductor the higher th...