Does the DX Flagpole require a balanced or unbalanced ATU tuner?

A. This reveals a common misconception about balanced/unbalanced antenna systems. In a practical sense, all that balanced means is that a source of RF voltage/current is not connected anywhere to a ground reference. Said in a simpler way, to be balanced an RF source must "float."

It is true that most tuners today do not provide physically-balanced outputs. Some part of the network is grounded. Hence they are unbalanced tuners if used in a common way. But isolate them from ground as we do by not grounding the tuner and mounting it on an insulated mount, our tuner IS operating in balanced mode. 

See our RF Blog to help for more information on this, here: