Allen Avionics has developed a family of wide bandwidth ground loop hum eliminators. These products will satisfy the broadcast industry's need for wide bandwidth components for use in high definition video applications, high speed video switching systems, high resolution or high definition video display and projection systems and for all wide bandwidth analog and digital transmission applications. These Hum Eliminators provide a high degree of common mode rejection at power frequencies DC to over 500MHz for the GLE-75-VHF-5.