11. "Reversed" Reception Area coverage predictions may be made centered on the receiver location that was selected on the Inputs, Circuit panel. Reception Area predictions are a powerful feature of ACE-HF, in that they permit the user to generate area coverage predictions for any target area in the world. Although the transmit location is at a fixed QTH, the reception areas are not. Creating a group of reception area predictions for each world target area is an excellent way of predicting when the bands will be open to those targets during contest situations. In this example, reception at Mexico City is illustrated. The area plot is for an Array Solutions four-square vertical array antenna (which produces a near-cardioid pattern) at Mexico City and is pointed North. The display shows that transmissions from nearly any state in the U. S. could be received at Mexico City for this time-of-day, 0200 UTC.