This research showed a study of the aerodynamic characteristics including the turbulent wake behind a twisted overhead transmission line in comparison to the wake behind a cylindrical transmission line. The study showed the effect of the shape of the twisted transmitter on the slow pattern and the boundary layer separation and the shape of the wake. A difference was noted between the two transmitters and especially the pressure distribution and the resulting force. The study also dealt with the noise caused by the flow; the twisted transmitter showed higher sound pressure levels SPL compared to the cylindrical transmitter. This is due to the boundary layer separation.