OK, sorry I haven't followed the OTA issues that close. I will set some OTA timers and post the results.Known issue with timers for off air recording.
If you turn to an off air channel and watch LIVE, everything is fine. If you set up a timer for later viewing, the recording is poor, if even watchable. What works as a stop gap is I record off air late at night so I turn the receiver to that channel and just turn the TV off but not the receiver. Then go to bed. Next day, the recorded show is fine because you were already "tuned" to that channel.