Luis, CT4NH, lives in one of those municipalities around Lisbon which seem to be part of the Portugal's capital city, but are spread many kilometres from the actual core of the town.
Antonio, CT1DVV, does not like publicity and exposure. He has been licensed for 30 years now and apart from contesting from his home, he also participated in group activities, but prefers to keep a low profile.
Presentation covers radio technology development from the Maxwell's mathematical description of electromagnetic waves in 1860-1865, Hertz's development of a crude spark transmitter and spark receiver that proved the existence electromagnetic waves in 1886-1888
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