Are you sure the digital signal is not off air? The analog and digital signal are quite different? Do you have another digital receiver that can get the signal or is there anyone in your neighborhood that can get the same digital cbs signal?
Its pretty much the same on my locals, the guide says they are all off the air all day and only come on on prime time. But they trasmit in digital all day. Not Voom's fault, its either Tribune or Zap2IT
Here in CT 3-2 says off air except when there is a HD show on but actually it is the full time digital feed for WFSB. WFSB bought a low power station in Massachusetts and uses 3-1 for that feed although the guide doesn't show that. They have different call letters for that feed. 3-1 doesn't have the CT news, 3-2 does. Wish there was a way to change it as when I push channel 3 on remote I can only go to 3-1 and then have to toggle down to 3-2. From the AVS forum I have learned that some receivers have the 2 feeds mapped the opposite way than we do. Some also have it our way. Maybe something in the signal the channel sends out, different receivers pick it up differently. I am just happy to be able to receive channel with March madness here. Wish we got espn so I could watch uconn girls. Canceled cable 2 weeks too soon.