Windows 7: Adding program data for wide rane of channels to WMC guide

I cannot get guide info for all the on-air TV channels I am able to receive. I have tried various zip codes which results in program data for a different combination of channels but never all of them - there are always several that say "No data available". Which is not true - all have data available but not all at the same ZIP code setting. Adding channels is no problem but program info is not always available. Is there any way to get program date for all channels over a wide range of zip codes?

You probably need to edit each channel and assign the correct guide information. WMC does a great job assigning guide info for cable, but not so much for OTA.

I have successfully added OTA TV channels to the guide, but not their programing data. The channels edited in always say "No data available" on their schedule.

Here's how I add sources to my unknown channels.

1. Go to Tasks, settings.
2. Select TV -> Guide -> Edit Channels
3. Select a channel.
4. Click Edit Listing.
5. Select the correct channel.
6. Click save.

Is that what you did?

Yes that is exactly what I have done, several times. And when I get to step 5 it seem verify the channel listing I need. But when the guide downloaded it still says "No data available". I receive 45 OTA digital channels of these 11 list as "No data available". The listings can be gotten by changing the zip code but then new ones are "No data available".