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Amateur Extra Class: 2020–2024
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Sections
E1: Commission's Rules
E2: Operating Procedures
E3: Radio Wave Propagation
E4: Amateur Practices
E5: Electrical Principles
E6: Circuit Components
E7: Practical Circuits
E8: Signals and Emissions
E9: Antennas and Transmission Lines
E0: Safety
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Element 4
E7
E7H
E7H01
E7H01:
What are three oscillator circuits used in amateur radio equipment?
Taft, Pierce and negative feedback
Pierce, Fenner and Beane
Taft, Hartley and Pierce
Colpitts, Hartley and Pierce
E7H01
E7H02
E7H03
E7H04
E7H05
E7H06
E7H07
E7H08
E7H09
E7H10
E7H11
E7H12
E7H13
E7H14
E7H15