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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
E9
E9A
E9A01
E9A01:
What is an isotropic antenna?
A grounded antenna used to measure Earth conductivity
A horizontally polarized antenna used to compare Yagi antennas
A theoretical, omnidirectional antenna used as a reference for antenna gain
A spacecraft antenna used to direct signals toward Earth
E9A01
E9A02
E9A03
E9A04
E9A05
E9A06
E9A07
E9A08
E9A09
E9A10
E9A11
E9A12
E9A13