Well, I think this is what's happening but don't have a way to verify without the input of other 921 owners. Here in the SF area, there's one station (KBHK, a UPN O&O) which I believe does not transmit any PSIP info at all. They were awarded an adjacent channel for their ATSC signal, and made the decision early on not to remap the channel. Instead they use this as a marketing tool ("UPN 44, Digital 45"). (As an aside, I find this particularly annoying since the DTV channel is always a simulcast. This had been in 480i, and the few HD feeds UPN has ("Star Trek: Enterprise" and "Jake 2.0", whatever that is) were not carried, but the simulcast recently went to 1080i so we'll see...) The 921 sees 45 in the DTV channel scan, and in the "Add DTV" screen, but it is never added to the channel list (and cannot be tuned directly using the remote, either). As near as I can tell this is because there is no PSIP info, but I have no way to verify this. On the Dish 6000, all other stations' call letters show up (e.g. "KNTV-HD") but no PSIP ID shows up on KBHK's digital signal. I thought of one test - to feed the 921 the output of my Dish 5000's 8VSB modulator (since the modulator does not output any PSIP info). However, this seemed to contradict the theory about a total lack of PSIP info since the 921 is able to add the 5000's 8VSB signal to the DTV channel list and tune it in just fine. If anyone out there with a 921 is in the SF market and/or has seen something similar elsewhere, please report your experiences.