An oscillator is provided that is arranged to function as a simplified receiver. Subsequent to driving the lower pile substantially into the ground, the connector is embedded into the exposed face of the lower pile. The communication terminal performs interactive audiovisual communication or audio communication by IP telephony over an IP network. The rotational control assembly could also be utilized as a component of other drilling mechanisms such as a downhole drilling motor. Thus, the connector is properly positioned relative to the mating connector by the magnetic force.