. Radio for everybody; being a popular guide to practical radio-phone reception and transmission and to the dot-and-dash reception and transmission of the radio telegraph, for the layman who wants to apply radio for his pleasure and profit without going into the special theories and the intricacies of the art . uspended beneaththe antenna and used in place of the usual ground connec-tion. The counterpoise wires should be elevated but afew feet from the ground, and just as carefully insulatedas the antenna wires. In aircraft, the counterpoise form of ground is em-ployed. It must be evident that
. Radio for everybody; being a popular guide to practical radio-phone reception and transmission and to the dot-and-dash reception and transmission of the radio telegraph, for the layman who wants to apply radio for his pleasure and profit without going into the special theories and the intricacies of the art . uspended beneaththe antenna and used in place of the usual ground connec-tion. The counterpoise wires should be elevated but afew feet from the ground, and just as carefully insulatedas the antenna wires. In aircraft, the counterpoise form of ground is em-ployed. It must be evident that no ground connection ispossible w^hen the machine is in flight. So the antennaconsists of one or more wires which are paid out whilethe machine is in flight, and which trail behind some 100or more feet in length, while the ground is represented RADIO FOR EVERYBODY 105 by a counterpoise made up of all the metal fittings andstay wires and control cables of the machine. The counterpoise is especially efficient and almost neces-sary in conjunction with continuous wave transmission, aswill be described farther on when we come to transmittingequipment. When the summer comes along in such locaHties wherethunder storms are common occurrences, it is necessaryto give some consideration to lightning. The antenna,. How the lightning: switch is installed. It should always beinstalled on the outside of the building, with the ground wiregoing as straight as possible. The blade of the switch is con-nected with the antenna, one jaw^ is connected w^ith the receivingset, and the other is connected directly to the ground. Thusthe antenna may be connected with the receiving set orgrounded. after all, presents but a small target to lightning, but evenso it is well not to take chances. Just as electric powerlines and telephone and telegraph lines must be protectedagainst lightning, so must the antenna be provided withsome protective device. The Fire Underwriters requirethe installation of a lightnin
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Keywords: ., bookcentury1900, bookdecade1920, bookidradioforever, bookyear1922
