 Another pseudo-Franklin (120 over 120 degrees; 240 degrees, total) has an efficiency of about 430 mV/m/kW at 1 km.As a conventional antenna of 225 degrees has an efficiency of about 440 mV/m/kW at 1 km, exceeding that of a 120 over 120 degree pseudo-Franklin, one might naturally assume that a 225 degree antenna would be preferred, but this is not the case for powers above about 5 kW as a self-cancellation effect occurs in the fringe reception area.For 10 kW and above, 195 degrees is optimum (about 400 mV/m/kW at 1 km), or a pseudo-Franklin or a Franklin may be employed, where each of these avoids or significantly reduces this self-cancellation.