Z Communications Company is a telecommunications company that develops and manufactures radio frequency (RF) and microwave components and subsystems. The company was founded in 1984 and is headquartered in Irvine, California. Z Communications Company's products include voltage-controlled oscillators (VCOs), phase-locked loops (PLLs), frequency synthesizers, and other RF and microwave components. The company's customers include military and aerospace contractors, telecommunications equipment manufacturers, and research institutions.