I haven't looked into it anywheres else, but does anyone know if there is any digital OTA signal(s) that can be picked up in Thunder Bay OR when there may be some coming available?
There aren't any Canadian DTV stations in Thunder Bay yet and probably won't be until 2011 (I will leave it to another thread to discuss why I think this).
As for American stations, I did a generic analysis for Thunder BayTVFool
and there aren't any that you can currently receive, but post transition there is one very weak signal (WBKP on channel 5). It hasn't applied to shut down its analog transmitter on or before February 17, so you will likely have to wait until June.
Your exact location will make a huge difference as to your chances of receiving this station and so I recommend you use TVFool
to do an analysis for your exact location. You can do this either by entering your address and "Thunder Bay, ON" as the city (leaving the State blank), or better yet, enter your exact coordinates. It will also list some Canadian stations, which you can ignore as they are not broadcasting yet as I mentioned above (their data for Canadian stations is inaccurate).
If you can post the results of this analysis, we can better help you determine your chances. I wouldn't get your hopes up, as the signal level for the generic analysis was too weak for reliable reception, but you might be in a better location.