. 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 . smitting end in view, since any good trans-mitting aerial gives good results with a receiving set. Inorder that the same aerial may be used for both purposes,a send-receive or aerial change-over switch is switch is connected with the aerial and with the re-ceiving and the
. 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 . smitting end in view, since any good trans-mitting aerial gives good results with a receiving set. Inorder that the same aerial may be used for both purposes,a send-receive or aerial change-over switch is switch is connected with the aerial and with the re-ceiving and the transmitting sets in such a manner thatwhen it is thrown one way, the aerial is connected withthe receiving set, and is used for receiving, and when itis thrown the other way, it is connected with the transmit-ting set and is ready for transmitting. Obviously, it wouldnot do to have the receiving set connected with the aerialat the same time as the transmitter, since the latter, withits powerful output, would cause damage to the delicatereceiving apparatus. RADIO FOR EVERYBODY !15 Many amateurs today prefer to use a separate aerialand antenna for transmitting and receiving. The aerialand antenna are connected with a single switching devicein such a manner that only one of them can be used at a Maif MA*t. •Ssz 6Tro^ OP «^ insylAtor L!ectrod«. InsoUTo** forCArryifN^ LeAd-ir\ Wire5 Constructional details of a good flat-top transnaitting aerial,the strop or egg type insulator, and the electrose lead-in in-sulator. time, so as to preclude operating the transmitter whilethe receiving set is connected with its antenna but a shortdistance away. In transmitting work a good ground is necessary, forthe best results. A ground that is imperfect or of highresistance will take away from the transmitting range inno little degree. 216 RADIO FOR EVERYBODY Transmitters That Are Sharply Tuned Single-circuit transmitters are not permitted under thepresent radio laws, for the reason that ^ .the
Size: 1698px × 1472px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1920, bookidradioforever, bookyear1922
