Originally Posted by G-Rex
I have spoken with the Atlona techs in great detail and they say it has enough bandwidth to support up to 4k 3d at 60 hz at distances over 300 feet. There web site also states these specs. However the sticky thread here at avs discussing hdmi over cat 5/6 has me a bit concerned. In all fairness the Atlona is newer technology than the ones discussed in the sticky so it might be very good and trouble free. It also seems that no one on avs has tried the Rainbow Fish optical hdmi.
If this was a passive cable I'd say that the bandwidth spec by itself would be enough. However since you are converting medium with the Atlona,there is also the question of whether the 4K format would be recognized by the converters? For instance when 3D came out some converters couldn't handle it because the audio portion of the 3D stream was in a different location than its non-3D counterpart. So, I have to wonder how any present day converter could say they would handle 4k 3D at 60Hz when not a single source can currently output 4K 3D at 60Hz.
I'd be impressed if someone said they had tested 4K since there are no 4K sources, just upconverters and a projector. Obviously test suites are available for 4K, but I don't think that is true for 4K 3D / 60Hz. So, expecting to find something that can handle that may be just too far ahead on the bleeding edge, right now.
Of course if HDMI were an analog medium, this would be simple as well. But, HDMI is a digital medium with handshaking and encryption, which means bits have to line-up in a way that meets the spec and each element (including converters/repeaters) must be proved to be trustworthy and "understand" the format it is passing.