I live in Walla Walla, WA, and subscribe to Dish local channels, but they dropped CBS due to failure to reach agreement with the local network. So I put up an antenna and get UHF channels 19 (KEPR), 25 (KNDU), 31 (KTNW), 42 (KVEW) from Kennewick, WA, and on a VHF antenna, I get channel 11...