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General Class: 2019–2023
Today
Sections
G1: Commission's Rules
G2: Operating Procedures
G3: Radio Wave Propagation
G4: Amateur Radio Practices
G5: Electrical Principles
G6: Circuit Components
G7: Practical Circuits
G8: Signals and Emissions
G9: Antennas and Feedlines
G0: Electrical and RF Safety
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Element 3
G3
G3A
G3A12
G3A12:
What does the K-index indicate?
The relative position of sunspots on the surface of the sun
The short-term stability of Earth's magnetic field
The stability of the sun's magnetic field
The solar radio flux at Boulder, Colorado
G3A01
G3A02
G3A03
G3A04
G3A05
G3A06
G3A07
G3A08
G3A09
G3A10
G3A11
G3A12
G3A13
G3A14