Custom built Antenna Beam Display centered on your location. Compatible with virtually any rotor. Works both manually or with major logging/tracking and rotor control software pgms. Beam Indicator Displays are available for both serial port and analog rotor controllers. Software pgm included for setting display modes: Includes - Rotor type, Beam Width, Long Path Led On/Off, +/-90 Degree Offset, etc. This is a joint international Ham Venture between W3FRG and DK7NT OPTIONS: SteppIR©Yagi - Automatic bearing display of Fwd, Rev and Bi-Directional Beam headings. +/-90 Degree Offset - For multiple directive antennas on one rotor/tower. Displays available in two sizes with your custom designed map using your selections Full two year warranty and Free shipping included. Web page has full details plus a brief video display: http://www.globalbeamdisplay.com/ Custom maps and retrofit of the original VBI-360 Beam Indicator Displays available.