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Next connect a wire to the aerial between the variable condenser and the stator and connect this to one post of a .0005 microfarad fixed condenser, then connect the other post of this with the grid of the detector and shunt a 2 megohm grid leak around it.
If you are using a condenser having a capacitance of .007 microfarad, which is the largest capacity value that the Government will allow an amateur to use, then if you have a hot wire ammeter in your aerial and tune the inductance coil or coils until the ammeter shows the largest amount of energy flowing through it you will know that your transmitter is tuned and that the aerial is sending out waves whose length is 200 meters.
The parts you need for this set include: one variocoupler; one .001 microfarad variable condenser; one .0005 microfarad variable condenser; one .0007 microfarad variable condenser; one 2 megohm grid leak; one vacuum tube detector; one 6 volt A battery; one 6 ohm, 1-1/2 ampere rheostat; one 200 ohm potentiometer; one 22-1/2 volt B battery; one .001 microfarad fixed condenser, one pair of 2,000 ohm headphones, and a variometer.
For this set you require: one variocoupler; two variometers; one .001 microfarad variable condenser; one .0005 microfarad variable condenser; one 2 megohm grid leak resistance; one vacuum tube detector; one 6 volt A battery; one 200 ohm potentiometer; one 22-1/2 volt B battery; one .001 microfarad fixed condenser, and one pair of 2,000 ohm headphones.
This done connect the other terminal of the filament to one post of the rheostat and the other post of this to the or negative side of the A battery. To the + electrode of the A battery connect the or zinc pole of the B battery and connect the + or carbon pole of the latter with one post of the fixed .001 microfarad condenser.
For this set you require: one variocoupler; two variometers; one .001 microfarad variable condenser; one .0005 microfarad variable condenser; one 2 megohm grid leak resistance; one vacuum tube detector; one 6 volt A battery; one 200 ohm potentiometer; one 22-1/2 volt B battery; one .001 microfarad fixed condenser, and one pair of 2,000 ohm headphones.
The parts you need for this set include: one variocoupler; one .001 microfarad variable condenser; one .0005 microfarad variable condenser; one .0007 microfarad variable condenser; one 2 megohm grid leak; one vacuum tube detector; one 6 volt A battery; one 6 ohm, 1-1/2 ampere rheostat; one 200 ohm potentiometer; one 22-1/2 volt B battery; one .001 microfarad fixed condenser, one pair of 2,000 ohm headphones, and a variometer.
This done connect the other terminal of the filament to one post of the rheostat and the other post of this to the or negative side of the A battery. To the + electrode of the A battery connect the or zinc pole of the B battery and connect the + or carbon pole of the latter with one post of the fixed .001 microfarad condenser.
Since the farad is far too large for practical purposes a millionth of a farad, or microfarad, whose symbol is mfd., is used. What Inductance Is.
Next connect a wire to the aerial between the variable condenser and the stator and connect this to one post of a .0005 microfarad fixed condenser, then connect the other post of this with the grid of the detector and shunt a 2 megohm grid leak around it.
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