14. When a ham listens on one of the NCDXF beacon frequencies, the usual purpose is to determine whether that band is suitable for contacts with the beacon's home country. But when the beacon call sign cannot be heard clearly, it is difficult to know which beacon is transmitting. The ACE-HF Active Beacon Display solves that problem by showing the transmitting beacons by highlighted cells that move to a new beacon/frequency sequence every 10 seconds. The Beacon chart also shows predictions for each beacon circuit to the user's receiver. Computed SNR values may be changed to Reliabilities, and the predictions may be animated. Beacon predictions may be customized for your station by selecting a preferred antenna. If directional, the selected antenna is automatically pointed at each beacon when the circuits are run. Assumed conditions at the user's location may be changed by selecting a different SSN value, month, manmade noise level or required reliability. As with the Circuit Groups table, each beacon prediction colors the table cells to respond to the CW Required SNR level selected. Predictions are made for the 100-watt beacon transmit levels, but lower beacon levels may be simulated by adjusting the CW Required SNR level upward in 10-dB steps. The beacon predictions are also evaluated for best frequency at the user's location. If several frequencies have yielded green predictions, the best of those is colored blue. Also, the best frequency for the beacon network as a whole is shown by changing the top-row frequency cell from white to blue.