I've read the post here:
But, for example, 2m verticals on boats don't have ground planes. Two questions.
The antenna system requires a "ground plane" for the radio wave to form. With dipoles, one half of the antenna is your ground. In verticals, something below must provide ground to complete the RF wave. This is usually achieved with radials, either attached to the base of the vertical, or buried below a ground mounted antenna. The presence of a metal mast/tower (which is lightning grounded) may contribute/interfere with the ground plane but it is not considered the antenna ground.
Am I right in saying that a ground plane results in optimal radiation, but that radiation will still take place without one e.g. boats antennas still reach the horizon, though likely height and more power are required.
Is a ground plane necessary for receiving?
Thanks for reading