Thierry wrote:
Is there a risk that this HV power line disturbs DX QSOs in HF bands
....

At my QTH, the power lines render a vertical virtually useless. I
suspect it is the vertical ground wire on a pole-mounted capacitor that
is the culprit as it is close to 1/4WL on 40m.
--
73, Cecil http://www.qsl.net/w5dxp