"From my experience with digital it is bad connections in the antenna cables.
We had problems when the wind was strong, fixed the connections, its perfect With analog the picture becomes "poor" With digital it is unreadable"
Making sure all the connections are shielded is probably the cheapest start of the elimination process. The splitter needs to be a fully shielded unit (not at all expensive) where the cables are connected using captive ends - no exposed core wiring, etc. The picture will collapse the moment the signal falls below the safe threshold, which may be only about 70% signal. Anologue will just get fuzzier and more snow-like with a weak signal, but will remain watchable. Digital will give a 100% picture even when the signal is near the verge of falling below the safe threshold, whereas analogue by this stage would look absolutely terrible.
