ACE stands for "Animated Communications Effectiveness", a coverage display technique originally developed for U.S. Navy submarine communications.
The ACE method shows a sequential series of coverage maps. When the maps are animated, a movie is shown.
ACE-HF's advantage is that the effects of the day's passage may be easily understood. ACE shows when the HF bands will be open in different world areas.
ACE comprehensive review
ACE has been ordered by me for implimentation in the KG5VK Contest station.