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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
E4
E4B
E4B07
E4B07:
What do the subscripts of S parameters represent?
The port or ports at which measurements are made
The relative time between measurements
Relative quality of the data
Frequency order of the measurements
E4B01
E4B02
E4B03
E4B04
E4B05
E4B06
E4B07
E4B08
E4B09
E4B10
E4B11