A:Answer It will record whatever picture that your antenna provides to the Tablo tuner and whether or not the tuner is reliably decoding any particular OTA signal, so if it's dipixolating or dropping during the recording session, so too will the playback. I don't know if you can assign a percentage. How well the Tablo tuner decodes weak signals versus other t.v. turners or external tuners will be the right answer to that question. In other words, some tuners do better than others. My TCL t.v. will usually give me a relaible, perfect picture at 2 bars out of 5, but I don't know how that equates to a percentage. How Tablo rates as a tuner versus Tivo or any other, I don't know that answer, but is a very important question to be answered for those of us in deep fringe areas, because we don't want to hurt our reception via an external tuner.