Yes, you can continue to use a VOOM HD receiver to pick up OTA digital channels, even though the VOOM satellite service is gone. With, that is, the following conditions:
-You must find a receiver which was activated and still receiving satellite programming when it was unplugged. I don't know how many receivers were deactivated remotely by VOOM before they shut down, but some were. Since the company (and service) is gone now, that won't likely happen anymore. If it's not still activated, it's a boat anchor at this stage, although some person with smarts may figure out how to reactivate them in the future.
-It would probably have a higher likelihood of success to get a receiver that was activated and used in your metro area, if that applies. I have seen posts referring to receivers that have the wrong system ID locked in and won't work in another location.
-If you're having trouble getting a VOOM receiver set up to receive OTA signals, don't do a factory reset or authorization reset because they will deactivate the receiver. Reboot the receiver by unplugging the power cord and plugging it back in.
-You won't have a program guide.
Personally, I haven't done this yet, but I'm about to give it a try. I'm repeating the information I've read elsewhere regarding the subject.
For more information, check out the following site:
Hope that helps,