Effect of High Tension Wires on Microwave frequencies

I am compiling the effects of HT wires on differents bands of microwave frequencies k,ku,ka,c bands and would appreciate some information from you guys

The issue will be dispersive fading. You should test for that.

Practically, the spectral response of the sparks generated by high voltage power lines is strong at low freq but set quickly as frequency rise.
I.e. the most sensitive receiver, like a ridioastronomical one, may be interfered by sparks up to L or S band (1...2 GHz).

Please note that the most strong source of radiated energy is not the Hi Voltage wires itself but the current flowing (sparking) into the holding isolators.