100-Radio-Hookups-EICO-1924

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i'jiM100 RADIO HOOK-UPSSYMBOLS USED IN HOOK-UPSTRANS-FORMER(man FRFQUFNCiVACUUMTUBETRANSR-FORME11AD10 FREQUENCY)\V!! VARIOMETER19.(30 TRANS-M ITTEReVOLTMETER-0-££VARIO-COUPLERThe left shows a picture of the apparatus while the rightshows the symbol used in all radio hoek-ups.HOW TO CONNECT RADIO INSTRUMENTSTHE three illustrations, Figure A, Figure B, andFigure C, show perspective views of how radio instrumentsare usually wired up.When making such connections, it is absolutelyimportant that all connections be very clean andbright, and wherever wires are connected to themselves,outside of the instruments, they should be soldered.All connections must be just as short as it is possibleto make them-superfluous lengths of wire onlymake for poor results and low efficiency.The three pictures, A, B and C, have been shownpurposely to demonstrate how difficult it is to studya circuit in this way. For that reason, the usual hook-upsare used.For instance, diagram A is the same circuit as hookupNo. 2 shown on page 14. You can readily see that the8F1P'1.
100 RADIO HOOK-UPScircuit can be traced better once you have grasped thesymbols in Figure 2, than if you traced the circuit indiagram A.Diagram B refers to hook-up No. 10, shown on page15, and here again you will see that it is easier to followthe circuit of the hook-up than the picture.Diagram C shows a picture layout of the instrumentsassembled in hook-up No. 69, illustrated on page 37.When it becomes necessary to actually make yourconnections, to hook up any particular outfit, it may bewell to make a picture diagram, similar to diagrams A, B,and C, and lay out the connecting wires in different col -AERIALPHONES7 DETECTORs.101.41.1TWO SLIDETUNING COIL-GROUND.001 MFD. CONDENSERFigure Aored pencil, such as black, red, blue, yellow, before youstart your wiring.Then, as you proceed with your work, cross off eachwire as the connection has been made. You will then nothave any difficulty in making either wrong connectionsor leaving out a certain connection.Proceed slowly and cautiously when wiring. Neverhurry' the job. You will get better results in the end.9
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Page 3 and 4: THE EXPERIMENTER'S LIBRARY, No.100
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Page 9: 1100 RADIO HOOK-UPSSYMBOLS USED IN
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