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Amateur Extra Class: 2020–2024
Today
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
Quick Index
Practice Test
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Element 4
E2
E2C
E2C12
E2C12:
What technique do individual nodes use to form a mesh network?
Forward error correction and Viterbi codes
Acting as store-and-forward digipeaters
Discovery and link establishment protocols
Custom code plugs for the local trunking systems
E2C01
E2C02
E2C03
E2C04
E2C05
E2C06
E2C07
E2C08
E2C09
E2C10
E2C11
E2C12