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Amateur Extra Class: 2020–2024
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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
E7E
E7E07
E7E07:
What is meant by the term "baseband" in radio communications?
The lowest frequency band that the transmitter or receiver covers
The frequency range occupied by a message signal prior to modulation
The unmodulated bandwidth of the transmitted signal
The basic oscillator frequency in an FM transmitter that is multiplied to increase the deviation and carrier frequency
E7E01
E7E02
E7E03
E7E04
E7E05
E7E06
E7E07
E7E08
E7E09
E7E10
E7E11