Is anyone seeing WRGT-DT? I'm still getting the same thing from them as I was from WKEF-DT last week. Nothing from the Digital receiver, With a analog tuner/receiver, still hearing the strange audio tone on 30 that was on 51 until it was fixed.
Also, with the intention of a short explanation, I don't know if I really said that quite right in the above post concerning interference to local stations from distant stations on the same channel via tropo.(i.e., skip/atmospheric bounce.)
It certianly is possible for tropo to affect local stations to the point of causing dropouts, I've even seen it happen on 10 and 24(but very, very rarely), but not on 31 or 41 because they are so strong here. Although a 41 in Louisville often puts some sort of signal into here when skip is happening, which I thought might be a occasional problem for WHIO-DT, but I haven't seen it be a problem. It will be interesting to see what happens when WBDT-DT 18 gets on the air, as I often see a very strong signal from an 18 in Lexington, KY.
Tropo interference most likely won't cause a rapid flucuation in readings however, from what I've experienced, if interference from a distant station is a cause, I think you'll see lower readings than normal for usually a fairly extended period of time, along with, more rarely, dropouts. Other sources of interference can cause rapidly fluctuating readings and dropouts however, especially if you aren't getting a strong signal from the local station.
Also, keep in mind, AFAIK
concerning any receiver out there at this time, the meters and indicators on our recievers don't indicate actual signal strength, even if they are saying that they are. They are giving us an indication of the signal to noise ratio, data errors, and the ability of the receiver to correct for multipath conditions.
Personally, I've never seen multipath be any sort of issue for digital reception from my location, even with antenna way off target to an extent which produces severe multipath(ghosting) on a station's analog counterpart. Even when the antenna is moving, or a plane flies through the signal path and produces ghosting on a digital's analog counterpart(on same tower), I've never seen a problem with multipath for DTV reception.
How far you can point your antenna off target from a local station and still receive a signal can be an indication of actual signal strentgth however, and is the only way I know of to have a chance of seeing how strong a signal actually is with our current crop of DTV receivers.
From what I understand, our receivers only require about 16DB of signal over noise for good reception of DTV signals. If the actual signal strength is at or just over that threshold, it can still produce high readings on our receivers just as a stronger signal would, but, it is also more susectable to interference(an increased noise level) than a real, stronger signal would be.
Hope this helps, getting enough Signal over Noise is a very, very big part of reliable OTA DTV reception.