[El Gato]

it was Nikola Tesla, the discoverer of AC power, who invented radio communication

Be that as it may, others were better promoters. Just as the Vikings probably "discovered America" well before Columbus' 1492 repeat of the feat, it was Columbus' "discovery" that lead to permanent European settlement of the Americas. So too, it was Marconi's version of wireless communications from which led to widespread use of the technology. So it can both be true that Tesla invented wireless communications and that Marconi's efforts "ushered in the era of wireless communications."

[max epr]

This same scenario took place in the invention of the telephone. About 50 years before Bell's device, Antonio Meucci made a working phone. The Meucci museum is located in Staten Island, NYC.