i've had pretty good luck pulling wcti 12 and upn 48 ota with an indoor rca 45 db amplified antenna. I bought it from Wal Mart last year and, as I work there, I have noticed we still have plenty in stock. They run about 20 bucks. Likewise, I pull 7, 9, 5, 11, 17, 25, 30, 50, and occasionally 22. I won't lie to you, reception of 12 and 48 is precarious. I have only found one spot in the house that works for me. That is on the floor in front of a window facing southeast. I'm not sure what the deal is with 12's reception pattern. When I held the Nielsen diary back in February, I made notation of 12's lousy analog reception here near Frog Level. Not too many months ago, they mentioned on the air during the news that they were adjusting analog signal to improve reception up here. To date, it has made no difference in my household. I really wish 12 would either boost their signal or reorient it to give better signal to the northern counties, but I suppose that would interfere with the signal from the affiliate in the triad. Just supposition on my part though. Anyways, maybe Ken12 can give you better guidance than me on this issue.
Regarding the local affiliates on Dish, I can't tell as I have distant nets from NY and LA. According to Dish website, UPN 48 is not a carried affiliate for this market.