. Practical wireless telegraphy; a complete text book for students of radio communication . hough signals will be receivedfrom any given station, they will not equal in strength the signal to be obtained by the useof one crystal. If an extra severe discharge of static strikes the receiving aerial, due to its extraordinaryintensity, the current in the local circuit of detector D-1 reaches approximately the same maxi- miim as in D-2, or, in . jn CONNfCTOR TO OSCILLATIONTRANSrORMER AND AERIAL other words, the currentincreases to approxi-jmately point Y on thecurve, but the current ofD-1 opposes t
. Practical wireless telegraphy; a complete text book for students of radio communication . hough signals will be receivedfrom any given station, they will not equal in strength the signal to be obtained by the useof one crystal. If an extra severe discharge of static strikes the receiving aerial, due to its extraordinaryintensity, the current in the local circuit of detector D-1 reaches approximately the same maxi- miim as in D-2, or, in . jn CONNfCTOR TO OSCILLATIONTRANSrORMER AND AERIAL other words, the currentincreases to approxi-jmately point Y on thecurve, but the current ofD-1 opposes that of D-2,and hence both detectorsact almost equally andoppositely on the receiv-ing telephone, and thecrash of the static dis-charge will be largelyannulled. The intensityof strong radio signalswill be reduced in thesame manner. The adjustment for ob-taining the best operat-ing characteristic of thiscombination is readilyobtained by a skilled op-erator. First, the sensi-tive spots on crystals D-1and D-2 are located, fol-lowed by corresponding CIRCUIT TO TRANSFORMER/PRIMARV CLOSED HERE. Fig. 200b—Elevation of Type I Aerial Changeover Switch. variation of the sliding contacts of the potentiometers P-1 and P-2. 155. Type I Aerial Changeover Switch.—A plan view and side elevation ofthis switch appear in Figs. 200-a and 200-b, respectively. Several steel discs, B,which make connection with the spring contacts C on either side of the rod, aremounted on a hard rubber rod R. When the handle A is thrown downward a long 174 PRACTICAL WIRELESS TELEGRAPHY. RECEIVER TYPE N« 106 PHONES
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Keywords: ., bookcentury1900, bookdecade1910, booksubjecttelegra, bookyear1917
