I am using a DIR-855, and have been tinkering with the antennas. I have found the following:
There are 3 antenna slots, lets call them A, B and C
when B, C are connected, but A is disconnected, wireless signal drops to almost nothing
when A is connected alone, wireless signal is good
Does this mean that the router is only using antenna A?
I want to replace the antennas with high-gain ones for a better signal, hence the toying around. currently have 1 8db antenna in addition to the stock ones.