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First amateur transmitter for radio telephony made by Einar Dessau and J. E. Ngrap

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Title: First amateur transmitter for radio telephony made by Einar Dessau and J. E. Ngrap
Contributing Institution: History San Jose Research Library
Collection: History San Jose Online Catalog
Rights Information: Please contact the contributing institution for more information regarding the copyright status of this object.
Description: "Poulsen Valdimar. Photo. No. 2." "The first amateur transmitter for radio telephony made by Einar Dessau and J. E. Ngrap (1907, 1909). Shown at Copenhagen radio show in 1936." 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: 593A142A-9C38-413C-8BCF-612710454814
2003-37-179
Subject: Federal Telegraph Company
Poulsen arc transmitter
Amateur radio stations--History (LCSH)
Radio--Transmitters and transmission (LCSH)
Vacuum-tubes (LCSH)
Trade shows (LCSH)
Collectors
Dessau, Einar
Ngrap, J. E

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