On 2015-04-19 11:20 AM, Kevin Stover wrote:
> A balanced feed point fed with unbalamced line needs a choke or 1:1
> balun or you get feedline radiation and screwed up pattern from
> common mode current on the coax shield.
Mosley's TA series antennas are not balanced feed points. They strap
one side of the driven element to the boom - that severely unbalances
the antenna *even if one uses a balun or choke*. Depending on the
antenna height (impedance of the tower at the antenna DE), it may be
nearly impossible to make a choke work properly and keep the feedline
and/or tower from radiating.
73,
... Joe, W4TV
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