Hi,

I am in a quandry, i have a TP-LINK MR6400 4g lte router and i am trying to set up an outside antenna for it and would like to know if its actually compatible for an outside antenna?, it has two aerial ports and i have linked both into a single cable antenna, then i connected the antenna to the router via a 20m cable and ended up with a weaker signal with 1 bar on the router then i connected the antenna directly to the router and got 4 bars but didn't have time to test the internet etc, so i am presuming the cheap cable i bought is no good as well as not knowing if i have the right setup, the antenna is a Poynting omni 280,

Any help would be greatly appreciated,

Thanks

Kevin