Just as in the case of horizontal dipoles, two monopoles fed aqual currents 180 องศา out of phase as shown in Fig 14-5, will have no radiation in the broadside direction. For spacing less than ….. , maximum gain is in the plane of the elements. The gain increases for close spacings. The coupled mutual impedance subtracts and thus reduces the impedance at each element. Fig 14-6 shows the pattern for spacing of ………. And …….. . Any additional gain is small.