I am using Channels on a Linux system and I have two HDHomeRun quad tuners on my LAN, both getting the same signal from my OTA antenna. (Sounds like overkill, but the original plan was to have one antenna here and one at the guest house, since the terrain between the two makes it possible that one might receive channels the other doesn't.)
This area recently got a new channel 15 (with 4 subchannels). It's low power and they have not filled out their schedule on the subchannels yet. I never knew about it until I hooked my HDHR up to the antenna and scanned. Oddly, the second HDHR didn't see channel 15 when it first scanned.
What's odd is that I have not rescanned and the 2nd HDHR now sees channel 15. Not only that, but there is now a Channel 27. I've never heard of it and can't find much on it, but the signal is there and 15.1 is in use, but the subchannels aren't.
I thought maybe Channels was just pulling down the listing info, but if that were true, then the HDHR devices wouldn't see those channels.
How did these show up? Does Channels automatically have HDHR devices rescan at various intervals? Or does the HDHR do that on its own regularly?

