Their previous signal was 5 kw day and night, running a DA-2 (Two different directional patterns, day and night). If memory serves, they had three towers for both patterns
Their current signal is 10 kw days and 5 kw nights, still running a DA-2. Current radio-locator data says that the night pattern uses five towers, so I would say that the patterns were changed when they returned.
When Jeff-Pilot turned in the license for 1470, a station in Yadkinville, NC filed to move to the frequency, and was given a construction permit for it. I believe they signed off back in the early 90's to build it out, ran out of $$$ and never returned, but held onto the construction permit for as long as they could, hoping to sell it to someone to build the station...but no takers.
The reason it took so long to rebuild 1470 in Greensboro was partially that, and partially that once the construction permit expired they had to apply for it as an open frequency with a completely new set of studies...none of the engineering data from the old WBIG was applicable because the new facility was no longer eligible for "first-service" lenient interference protection as the old station had.
Later....
Matt Smith
WGSR-TV 39