American telegraphy and encyclopedia of the telegraph; systems, apparatus, operation (1909)
Maver, William, jr. [from old catalog] · New York, Maver publishing company · leaf 397
ordinary Morse telegraphy.The specimen of a dot and dash wireless telegraph record given in Fig. 254^ isa facsimile of bulletins caught on the wing during the yacht races of 1899 inNew York Harbor. Jilr. Marconi had his apparatus on the steamship Ponce^ and■was sending bulletins of the progress of… … SYNTONIC WIRELESS TELEGRAPHY. 335/ ship La Grande Duchesse. This was probably the first instance of tapping Hertzianwave signals, in the United States at least. It will be understood that Shr. is anabbreviation of Shamrock. Other abbreviations were used in these bulletins, as Col. H R D R Fig.…
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