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Building Up Your Code Speed
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adjustment Advanced-class alternating current amateur bands amateur radio amplifier stage amplitude modulation antenna applications audio bleeder resistor capacitance carrier cathode chapter choke choke coils circuitry class-A code speed coil connected coupled crystal oscillator d-c output d-c voltage device diode dynamotor electrical Extra-class license feed filament filter system final amplifier frequency multiplying full-wave grid bias half-wave harmonic high-voltage impedance inductance input KEY TO SYMBOLS load meter method microphone mobile modulation motor-generator neutralization ohms oscillator circuits overmodulation paragraph parallel peak envelope power pentode plate current plate voltage power supply practice push-pull quency questions r-f amplifier r-f oscillator radiating system radio-frequency radiotelephone reactance receiver rectifier resistance resonance screen grid serve shown in Fig sideband signal speech amplifier station storage battery tank circuit tape tetrode tion trans transformer transistor transmission line transmitter triode vacuum-tube VARIABLE-FREQUENCY OSCILLATORS voltage divider volts winding wire