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Radio Ground Station of Eastern Air Lines at Candler Airport Atlanta Georgia
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aeronautical aircraft airplane airport alternating current amperes amplitude antenna circuit armature audio aviation band battery capacitance capacity carrier cathode cause cell characteristics charge Class Class C amplifier coil condenser connected coupling crystal oscillator current flow cycles dah dah designed detector diode direct current direction dynamotor effect electrical electrons equipment field filament filter flux frequency goniometer grid bias ground stations impedance inductance inductance coil input installation insulated license load loop antenna magnetic marker beacon maximum meter microphone modulation motor mounted negative ohms operation pentode pilot plane plate circuit plate current plate voltage positive power amplifier power output power supply primary quency radiation radio range beacon radio receiver radio waves radio-frequency radiotelegraph radiotelephone reactance rectifier relay resistance resistor resonance secondary shown in Figure shunt signal stage switch terminal tion trans transformer transmission transmitter triode tuned circuit unit vacuum tube volts watts Western Electric winding wire