The Global Beam Display provides its user with a visual presentation of where their directive antenna is pointed, not just a digital bearing, but where on the globe you are viewing plus the available prefix's within that region. The Beam Display is centered on your location and is compatible with virtually any rotor controller. You design a polar map of your choice from sample maps to make it your own. The Digital input beam display is available for all RS232 compatible rotors such as the M2, Alfa Spid and Prosistel. For Analog input rotor controllers such as HyGain and Yaesu, an analog display is available. The digital input Global Beam Display works with all major logging & tracking software pgms on your PC. Included for setting all of the beam display modes: Rotor type, Beam Width, Long Path On/Off, Degree Offset, Baud Rate and more, is a self contained software pgm. No calibration is required. This is an International Ham venture from W3FRG and DK7NT AVAILABLE OPTION(S): SteppIR©Yagi - Automatic bearing display of the SteppIR©Yagi Fwd, Rev and Bi-Directional Beam headings. No excuses for where your antenna is pointed anymore. Beam Displays are currently available in two standard sizes, 16" x 16" and 24" x 24" with your custom designed polar map of your selections. Comes with everything required, no additional items to buy. Free shipping is also included plus a full two year warranty, P&L. Web page has full details plus a brief video demo using the SteppIR©Yagi. http://www.globalbeamdisplay.com/ For the original VBI-360 Beam Indicator, custom maps, upgrades and retrofits are also available.