The arm-cap Junction of a biconical antenna supports a ring charge, the value of which is calculable in an electromagnetically exact way. The field intensity Just off its surface Is singular but integrable. Charge values are calculated Using conservation of charge and Causa' law. Observations Include that, in differential dipole radiators, most of the dipolar current oscillates between the driving source and the ring charge. Radiated power is roportional to the square of the small cap current.