WIAV-LP Asiavision 58 has a very limited coverage area NE of DC that does include the College Park area. I have never seen it from Sterling. I have seen the analog 58 signal from W58DK, the Virginia Public TV translator located west of Culpepper on the Blue Ridge at night, even though I am way outside the coverage area for it. I checked the analog tuner for channel 58 over the weekend and did not see it. No idea if W58DK is still on the air or not.
WIAV-LP recently filed 2 applications for displacement allotments: one for analog low power on VHF 4 at 3 kW with a modest increase in coverage and another one for digital low power on UHF 43 at 10 kW which would provide a major boost in population coverage of 1029% over their UHF 58 signal. If I were WIAV, I would hope the FCC grants the digital RF 43 application.
BTW, WHAG-DT NBC 25 is operating at 575 kW, not 1000 kW. Still a stronger signal than the analog 25 they had. I have picked up WHAG-DT with a Silver Sensor aimed at it on the upper floor, but I still have to rework my UHF setup to see if I can pull in WHAG-DT while also getting the DC and Baltimore stations.