I called Dish tonight regarding my 211 issue and of course they had me do the same reboot , rescan etc that I have already been doing. They insist that it is something to do with the stations transmitting the signal and not the receiver. Would not let me return the receiver since everything else was functioning. I am using an RCA power antenna.
Pinchhitter,
But, did they do a complete removal of your subscription and re-establishing of it, which would mean about 10-20 minutes of downloading from the satellite to re-establish all your subscribed channels... as if it were a new replacement receiver?
I don't know all the technical details of what that implies, but though I am a self-taught engineer (with some, but minimal RF experience), I do work a lot on intuition. And, I sense that it was not the hardware's fault, but some sort of corruption in the software setup, perhaps over time and also if the stations changed things, the receiver software was not aware of it.
Apparently, the 211 requires a Dish subscription in order to receive OTA signals. Also, during my switchover to the new replacement 211, the gal mentioned that the satellite would be looking at the OTA signal response from the receiver... so it seemed like there was some interaction there, such that the satellite signal/software might adjust things in the receiver to best accomodate the OTA channels I had scanned in. It sounds odd, but not implausable. Thus, a complete re-subscribing scenerio might work... to freshen things up. Also, after doing this, I did notice channel 6's new 3rd channel (06-3). So something was different. Even though I'd removed and re-added local channel 6 on the old unit and it did not show that 3rd channel!
So, really there were four possible scenerios I see;
1. The 211 hardware was bad. (I question that)
2. This replacement 211 has upgraded hardware. (doubtful)
3. Software corruption requiring a complete resubscribing essentially.
4. Channel 6,10 & 40 and Dish happened to work everything out with the 720P transmission which all 3 of those stations are doing... at the EXACT same time I setup my new 211 replacement 3 or so days ago... heh. (Does this mean I could have won the lottery too, due to my timely luck?

#2 seems plausable.
Tell them they have another customer in Oakley who's SAME problem was solved by a 211 replacement in the same area with the same 3-channel problem and they replaced HIS and he even called in the success of it so they would report that as a KNOWN issue!!!