The only accessible reality to physics studies is the one we can reach with our mathematical tools. They extend our five senses to small and large dimensions and describe what our instruments measure. This site is for mainstream physics questions and mathematics is the basic language.
When physics mathematical knowledge is used in engineering, which is the realm of antennas and transmission of information, another site would be appropriate for submitting this question, because the complexity becomes even worse.
A simplistic explanation of how information can be transmitted with radio frequency electromagnetic waves is the following:
Electromagnetic waves ride on zillions of elementary particles, called photons. Have you seen a stadium wave ? Its medium is people lifting themselves off their seat in a time sequence, nobody moves much, but the wave passes . If the thousands of people were throwing a ball in the direction of the wave, there would be a wave of balls going around the stadium.
Electrons in the metal of the antenna, under the rhythmic influence of induced currents in the antenna metal, throw off, radiate, photons that join up, and, with the velocity of light, leave the antenna as a coherent wave. This wave reaches a receiver antenna which interacts with the electrons in the antenna, and gives them a drift velocity with the frequencies and intensity of the incoming wave, which generates a current, which can be read in the electronic instruments of the antenna.
The modulation of the currents in the transmitting antenna can imprint a signal on these zillions of photons ( either in intensity or in frequency) which is transmitted to the receiving antenna.
The Morse code was the first way that information was modulated on an electromagnetic wireless signal,
Starting in late 1894, Guglielmo Marconi began pursuing the idea of building a wireless telegraphy system based on Hertzian waves (radio). Marconi gained a patent on the system in 1896 and developed it into a commercial communication system over the next few years.
At present electronic circuits can continuously modulate radio wave beams, carrying complicated sounds and images which leave, riding on zillions of photons through the air, and are received in a receiving antenna, the signal read off the currents induced by the absorption of the incoming photons.
To get an idea of what complicated mathematics models electromagnetic waves need have a look at this