. An elementary manual of radiotelegraphy and radiotelephony for students and operators . 60 words per minute 1 x lU .. yrolucfdfrjin -The Kleclrician by p-;rniission of the Froprutort. Fig. 15.—Poulsen Photographic Receiver and Records. working on the Atlantic Ocean are equipped with correspondingsending and receiving apparatus, A complete wireless exchange has thus been established, by means of which these vessels cancommunicate with each other when at sea, and with various Marconi Company was not only the first in the field toestablish, but even to-day (1915) is the only com
. An elementary manual of radiotelegraphy and radiotelephony for students and operators . 60 words per minute 1 x lU .. yrolucfdfrjin -The Kleclrician by p-;rniission of the Froprutort. Fig. 15.—Poulsen Photographic Receiver and Records. working on the Atlantic Ocean are equipped with correspondingsending and receiving apparatus, A complete wireless exchange has thus been established, by means of which these vessels cancommunicate with each other when at sea, and with various Marconi Company was not only the first in the field toestablish, but even to-day (1915) is the only company operating afully organized system of intercommunicati(jn with ships equipped 26o RADIOTELEGRAPHY with apparatus suitable for communicating with numerous shorestations. For this purpose certain wave lengths had to be selected ;the wave lengths now ordered for intercommunication betweenship, and ship and shore short distances are 300 metres and 600metres. Each station and ship on which a wireless installationis made has its sending and receiving apparatus tuned for thesame or for certain wave lengths. It is also
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Keywords: ., bookcentury1900, bookdecade1910, booksubjecttelegra, bookyear1916
