Best way is to get OTA. In my area, Me-TV is available on the main channel of it's local affiliate, but many programs are preempted due to infomercials. So I prefer to watch it via the New Hampshire affiliate who has it on DT-2.
Those stations can't be added like that. They are designed to be OTA subchannels (or in some cases main channels). The only way they can be added is under the local markets only. MeTV actually has some syndex issues so in some markets they repeat programming at certain times.
Those stations are classified as digital broadcast networks not cable networks