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Description
"Poulsen Valdimar. Photo. No. 5." "Table top Valdemar Poulsen system first amateur radio transmitting station built by Einar Dessau and J.E. Ngrap. Coppied [sic] from Valdemar Poulsen's commercial oscillator the same model as I saw in the New Almaden Museum." Caption by Douglas Perham, part of a series of pictures of "the first amateur station in the world, by Einar Dessau, in Copenhagen, Denmark, in 1907."
Type
image
Format
Black & White
Identifier
16EEFCCD-8F4D-4D4A-9D1F-788750736631 2003-37-182
Subject
Federal Telegraph Company Poulsen arc transmitter Amateur radio stations--History (LCSH) Radio--Transmitters and transmission (LCSH) New Almaden Museum Oscillators, Crystal (LCSH) Dessau, Einar Poulsen, Valdemar Ngrap, J. E
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