Nice!
I see you have the antennas mounted at 45 and 135 for MIMO spatial diversity. It would be interesting to see real world how much a difference the angle mounting helps VS two antennas mounted normally.
I'm assuming your not using the Y-pigtail connector any longer and each antenna is connected directly to an external antenna jack on the 341U? I have a Sprint/Netgear 6100D with two antenna ports.
I'm in the process of reconfiguring my antenna system. I have a hill in back of my house that is blocking line of site to the tower. I've purchase materials to put up a home made 35' antenna mast up on the hill in back of my house. The problem is that it required a 125' long run of cable. Obviously attenuation is an issue with a run this long so I purchased a custom made run of Draka 1/2-50 feeder cable. Specs on the Draka are a bit better than LMR600 or Andrews Heliax. Definitely not cheap
I'd like to put two antennas up, but I sure don't want to buy another 125' of cable. I wonder how a 2-Way 50 ohm outdoor rated splitter/combiner on the mast would work? Plug each antenna into the spitter/combiner on one side and then the Draka feeder able into the other. If each antenna is pointed exactly the same way at the same tower that is 5 miles away, I should gain signal (3db theoretical max which represents a doubling in signal).
Anyways.. Nice project. I hope to post pictures of mine when complete.