. Farrow's manual of military training . been issued by theSignal Corps. The smaller size, known as a field radio pack set, isfurnished to the Organized Militia as well as to the field range of these sets under normal conditions is about 25 milesover land, but much greater over water. Thus one of the one-eighthkilowatt sets, with a 100-foot mast, at Habana has worked with thenaval station at Key West, a distance of about 110 miles. The larger size of field sets, known as a wagon set, is of2-kilowatts output and is carried on a two-chest pintle wagon, onechest with the engine and
. Farrow's manual of military training . been issued by theSignal Corps. The smaller size, known as a field radio pack set, isfurnished to the Organized Militia as well as to the field range of these sets under normal conditions is about 25 milesover land, but much greater over water. Thus one of the one-eighthkilowatt sets, with a 100-foot mast, at Habana has worked with thenaval station at Key West, a distance of about 110 miles. The larger size of field sets, known as a wagon set, is of2-kilowatts output and is carried on a two-chest pintle wagon, onechest with the engine and generator and the other with the trans-mitting and the receiving apparatus. The range of these sets variesfrom 75 to 800 miles, depending on favorable weather conditions,time of day or night, character of the land between the sets, andsimilar considerations. 536 MILITARY TRAININGOPERATING CHEST In this chest is mounted the transmitting and receiving ap-paratus, the diagram of which is shown. To put the chest in condi- V RECEIVE ^kflltr. WIRING DIAGRAM, FIELD RADIO PACK SET, MODEL 1913 tion for sending, connect the double contact plugs of the leadsfrom the hand generator, field, antenna, and counterpoise to the ARMY SIGNALING 537 receptacles marked Gen., Fid., A, and C, respectively, andthe four variable contact clips on the leads from the condenser,spark gap, antenna, and hot-wire ammeter, to the four points on theflat spiral, as indicated on the diagram, making sure that thecounterpoise clip is at the end of the outside turn. Set the con-trol switch at the sending or lower position. Release the indi-cating needle of the ammeter by turning the small knurled screwat the left-hand side of the upper binding post. When the needleis free, adjust to zero position on the scale by means of the smallknurled screw at the right side of the upper binding post. Set thevariable spark-gap contact on the fifth plate, counted from the leftend, so as to put four gaps in circuit. Start the genera
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectmilitaryartandscienc
