. Practical wireless telegraphy; a complete text book for students of radio communication . sending and receiving apparatus plays an important part in the servicebetween the Occident and the Orient. The sending machine consists of a Wheatstone auto-matic transmitter and special perforator, which makes possible the transmission of more MARCONI TRANSOCEANIC RADIO TELEGRAPHY. 299 than 100 words a minute. Under the automatic system, ten or 100 messages can be filedat tne same time at the office of the Marconi Company in Honolulu. They will be distributedamong the necessary number of operators and
. Practical wireless telegraphy; a complete text book for students of radio communication . sending and receiving apparatus plays an important part in the servicebetween the Occident and the Orient. The sending machine consists of a Wheatstone auto-matic transmitter and special perforator, which makes possible the transmission of more MARCONI TRANSOCEANIC RADIO TELEGRAPHY. 299 than 100 words a minute. Under the automatic system, ten or 100 messages can be filedat tne same time at the office of the Marconi Company in Honolulu. They will be distributedamong the necessary number of operators and the dots and dashes punched in a papertape Dy a typewriter perforator. This tape is fed into an automatic sender and the signalsconveyed by land line to Kahuku, where the dots and dashes actuate a high voltage sendingkey,_ automatically energizing the aerial instantaneously with the feeding of the tape in thestation, thirty miles or more away. At the transmitting station the dots and dashes operatethe magnets ot the high power sending key in the main energy circuits and the signals are. TRANSMITTING STATION Kahuku Island of- Oahu _ Buildings Fig. 310—General Plans of Transmitting Aerials at Marconi Station, Kahuku, Hawaiian Islands. flashed to whichever destination the message calls for—either Marshalls or Funabashi. Ifthe message is destined for Marshalls it will be received on a specially constructed dicta-phone machine, each cylinder, as soon as it is indented with dots and dashes, being handedto an operator, who transcribes it into a typewritten message by means of a reproducingdictaphone machine, running at normal speed. The Imperial Japanese Government station at Funabashi, Japan, is equipped with a200 K. W. quenched spark transmitter, but complete details of the equipment are not yetavailable. 235. Marconi Tubular Masts.—One of the most interesting features of theoriginal construction work at the Marconi high power stations was the erection of the steeltubular mast
Size: 1711px × 1460px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjecttelegra, bookyear1917
