Originally Posted by serendipitor
But I must say that having bright shiny copper for the antenna is a tall order, in this rainy climate. All my wire antennas get a surface corrosion over time. I'll clean up the wire initially, but it will not stay that way.
Tesla talked about polishing the surface of his plate collectors as well.
Oxidized bare copper wire has rectifying ability.
Apparently Moray used this for an antenna too.
Rain increases the amount of ions available.