The present invention relates to improved methods for completing well bores along producing zones and, more particularly, to methods for strengthening near well bore subterranean formations. The television receiver extracts an EPG from the received radio waves and transmits it to a remote controller via an infrared transmissionreception section. A cone angle 2 of the ferroelectric liquid crystal is not smaller than 45. Indexed readouts for calibration are provided at all primary adjustment points. A polarity of the pulses is inverted randomly before transmitting the pulses as an ultra wide bandwidth signal.