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General: Overmodulation

Which of the following is an effect of overmodulation? [G8A08] A. Insufficient audio B. Insufficient bandwidth C. Frequency drift D. Excessive bandwidth The answer is D. Excessive bandwidth.  Now, for the purposes of getting this question correct on the exam, I’ll just say this: Just remember the connection between overmodulation and excessive bandwidth. The real …

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Technician: Spin Fading

What causes spin fading when referring to satellite signals? [T8B09] A. Circular polarized noise interference radiated from the sun B. Rotation of the satellite and its antennas C. Doppler shift of the received signal D. Interfering signals within the satellite uplink band Well, to start with, I suppose we should define “spin fading.”  Spin fading …

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