The book of Wireless Telegraph And Telephone : Being a Clear Description of Wireless Telgraph And Telephone Sets And How to Make And Operate Them, Together With a Simple Explanation of How Wireless Works
The book The book of Wireless Telegraph And Telephone : Being a Clear Description of Wireless Telgraph And Telephone Sets And How to Make And Operate Them, Together With a Simple Explanation of How Wireless Works was written by author Collins, A. Frederick (Archie Frederick), 1869- Here you can read free online of The book of Wireless Telegraph And Telephone : Being a Clear Description of Wireless Telgraph And Telephone Sets And How to Make And Operate Them, Together With a Simple Explanation of How Wireless Works book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is The book of Wireless Telegraph And Telephone : Being a Clear Description of Wireless Telgraph And Telephone Sets And How to Make And Operate Them, Together With a Simple Explanation of How Wireless Works a good or bad book?
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These coils can be bought ready wound, the smallest having a range of wave lengths from 180 to 400 meters with a .001 microfarad variable condenser while the next size will give you a range of waves from 180 to 1,000 meters with a variable condenser of the same capacitance. You can then mount them so that they will swing close to and away from the primary and so vary the coupling. Besides the tuning coils you must also have (2) a .001 mfd. variable condenser; (3) a .00025 mfd. fixed condenser, ...and (4) a grid leak, see B, of 1 rnegohm resistance. You will also need (5) an A battery; (6) a rheostat; (7) a detector tube; (8) a B battery, and (9) a pair of head-phones all as described for the preceding re- ceiving set. To wire up the set connect one end of the primary coil, which is the fixed coil, to the leading-in wire of the aerial and the other end of the coil with the ground as shown at C in Fig. 178. Now connect one end of the secondary coil with one side of the fixed condenser and the other side of this to the grid of the detector, and shunt the grid leak around the condenser.
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