What does a magnetic antenna do?
The main function of the magnet mount sucker antenna is to radiate and receive radio waves. The sucker mount antenna is fixed in a certain place by passing the antenna through the suction cup at the bottom to avoid accidents. Because its suction cup base is relatively stable, it is widely used on vehicles.
How does a magnet mount antenna ground?
There's always a ground. Whether it's what you intend it to be or not is another issue... A mag-mount antenna is grounded through capacitive coupling between that magnet and the metal it's stuck to