9 Electronic navigational devices, namely, magnetic based navigation units; software for facilitating use of magnetic based navigation units, radio transceivers and wireless telephone; navigation systems comprised of processors and storage media; vehicle navigation apparatus featuring magnetic receivers and digital map displays; portable magnetic navigation devices, namely, electronic instruments for determining and outputting position and speed; wireless communications radios featuring a magnetic navigation unit; personal digital assistants featuring a magnetic navigation unit and electronic maps; electronic navigation devices, namely, magnetic navigation receivers having an electronic compass; electronic navigation devices, namely, magnetic navigation receivers having an altimeter; electronic storage media containing map data and magnetic navigation software for calculating and displaying route; portable and handheld personal magnetic navigation devices