They've just taken Pensacola's old Cable Access channel and put it on an extra (wasted) full power TV station so it'll get coverage on all cable/sat/iptv systems in the Mobile-Pen-FWB markets. They also pick up some OTA viewers in the eastern half of the DMA. Pretty smart idea actually considering the size and number of different cable systems in the Mobile DMA and it's just about the only loophole BLAB could use to reach viewers on DirecTV, Dish Net, and UVerse. It's not that unusual as WAWD "Beach TV" has been 24/7 local infomercials for 20? years and WPAN is about 50/50 local and national infomercials with some overnight home shopping thrown in.
I don't know why this TV station format isn't common on full power TV stations in other markets. Most "local infomercial" TV stations are on LPTVs. Our market does have far more Full Power TV stations than other markets with similar populations and since we have no use for ethnic or Spanish TV those 4 Fort Walton stations have always struggled to find viable programming, they were never any use to Networks because they lack OTA coverage in Mobile county where about half the population lives.
Oh, there's also the backing and very deep pockets of the Levin Law Firm funding BLAB, so they can afford to do pretty much anything they want. I wouldn't be surprised if a Panama City expansion of BLAB was in the short term plans. What ever happened to that Channel 2 allocation the FCC granted to Apalachicola about 10 years ago? The Montgomery expansion was a bit of a surprise to me though... they probably got a nice deal on the air time from Flinn Broadcasting, the parent company that owns WFBD and WBIF.