Dave wrote:
[snip]

A LP is a balanced driven array. It should NOT be fed directly with coax [as you
describe]. Direct feed causes a current imbalance and currents on the outside
braid of the coax. You need either a choke balun or a ferrite based 6 meter balun.

Actually if the coax is fed through one half of the boom with the outer
conductor attached to that side and the center conductor connected to
the other half of the boom you don't need a balun.