AN OSCILLATION CONDENSER.
An ordinary double-throw, double-pole knife switch having a porcelain base will make a very good aerial switch in a small station. It is used to connect the aerial and ground to either the transmitting or receiving apparatus at will. Such a switch is shown in Figure 230.
Fig 228.—Circuit showing how to connect a Helix and a Condenser.
The aerial should be connected to the post A and the ground to B. The posts E and F lead to the transmitter, and C and D to the receptor, or vice-versa according to which is the more convenient from the location of the apparatus on the table or operating bench.
A suitable table should be arranged to place the wireless instruments upon so that they may be permanently connected together.
Fig 229.—Circuit showing how to connect an Oscillation Transformer and a Condenser.
The Continental Code is the one usually employed in wireless telegraphy. It differs slightly from Morse as it contains no space letters. It will be found easy to learn and somewhat easier to handle than Morse.