Hi everyone! So my question is this...I've noticed some antenna have need of radials..or counterpoises...also others have need of ground wires...So How does one know which antenna need to be grounded? or which ones need radials? Like , you could tell me that magnetic loops don't need radials..but how do you know this? and why? What is it about certain antenna design that require ground wires, or radials, and others don't?Just for an example, a magnetic loop antenna, I haven't read anywhere or seen videos where it shows it needs to be grounded or have radials attached. I'm assuming mag loops don't need either? But why then do half-dipoles need them?