“See question below! I live in Hyattsville, MD. I bought my Insignia - 19" TV from College Park, MD. I have tried to scan channels several times. Each time I scan, I get a different group of channels. The last time I scanned, I got many of the channels I wanted except I couldn't get Channels 9 (CBS;WUSA), 50 (WDCW), 20 (WDCA), and of course their digital subchannels. Now I see that I am no longer getting the WJLA digtal channel MeTV, when I had it when it first scanned! Why is this happening, and do I need something special to keep these channels connected? (I happen to have an HD antenna that helped me get the few channles I have.)”