Fausto, I agree with Jim, a coax line is not usable due it it's high capacitance that will act as shunt (parallel) capacitance. Apart from the high voltage problem it will lower the impedance seen at
Hello James, I haven't another mast but is possible to put an horizontal wire (or more parallel wire) from top of the tower to TV antenna mast that is in the center of the roof at about 30 meter from