A register of transmission engineering

Why a radio signal goes where it goes: the ionosphere, the mast, and the rules that follow from both.

A publication about transmission engineering. Not a broadcast station — no schedules, no listings, no coverage claims.

Section 03

The Mast

A medium-wave mast is not a structure holding an antenna up. The steel is the radiator, insulated from the ground at its base, and the other half of the antenna is buried under the field in copper.

Tall lattice cell tower with mounted antennas rising against a clear blue sky
A series-fed tower: the steel is the radiator, insulated from the ground and fed at its base.Photo: AS Photography / Pexels