Originally Posted by Pete-N2
Or maybe it scans channels on the list every couple of hours and the entire band every couple of days...
That's possible, I suppose; but if it's programmed to only do a "full" scan less often, you'd think it'd also be programmed to do them during the day, so it wouldn't pick up tropo stations at all.
But it does pick them up; just not as often as I'd expect, now that I see what comes in if you scan every five minutes.
Originally Posted by ed_in_tx
I've only seen mine add new channels overnight when in standby mode. But not always. Like 27.5. Neither of my 'Pals auto-added it. Running "Add a new channel" didn't add 27.5 either. Only way to get 27.5 finally was to do a setup wizard to make it dump all the exiting channels in memory and start anew. Then after getting 27.5 added, both 'Pals had lost sync with the time and were gaining about 8-10 sec a day, I did not set the clock during the setup, just let it find the time supposedly, so I had to do the double-soft reboot to get the clocks on time, now within 5 seconds of correct time.
Are all OTA DVRs as quirky as the DTVPal?
Well, the PHD-VRX and VRX2 are pretty quirky. So are the MStar boxes (iView, HomeWorX, etc.), although my iView didn't have any trouble picking up 27.5 on a manual scan. The DVR+ also picked 27.5 up on a manual scan. So the specific quirk with 27.5 may be unique to the DTVPal.
I know the TViX 6620 had some quirks with Ion's Airbox service, and a few others, although I don't think overall it was too bad.
Regarding time, the MStar ones just use whatever time is sent by the station they're tuned to, which causes its own problems, but at least is predictable. The DVR+ uses Internet time, apparently from the Rovi guide service, if it's connected to the Internet, and most owners do hook their DVR+'s up to the Internet. But from one user's experience, it apparently uses an average (similar to the DTVPal after two reboots) if it's not connected. Just doesn't require two reboots to lock first - but with the latest firmware it does seem to require being forced to periodically tune to every channel (by, e.g., setting up dummy recordings). Older firmware seemed to keep a PSIP-based guide up-to-date without such extraordinary measures, so apparently a bug with that function was introduced somewhere along the line.
I don't know much about TiVo, but the rest all have some quirks, so TiVo probably does too. "As quirky as the DTVPal" is harder to say, though. IMO the TViX and the DVR+ were/are the least quirky; the PHD-VRX/2 and MStar boxes are the most quirky, and the DTVPal is somewhere in-between.