Deep Dive: E2B07
The correct answer is B: QAM and QPSK. Which types of modulation are used for amateur television DVB-T signals are QAM and QPSK. DVB-T (Digital Video Broadcasting - Terrestrial) uses QAM and QPSK modulation. For amateur radio operators, this is important for digital TV operation. Understanding this helps when operating digital TV.
Why Other Answers Are Wrong
Option A: Incorrect. FM and FSK aren't used for DVB-T - DVB-T uses QAM and QPSK. FM/FSK isn't used. Option C: Incorrect. AM and OOK aren't used for DVB-T - DVB-T uses QAM and QPSK. AM/OOK isn't used. Option D: Incorrect. Since A and C are not correct, 'all of the above' cannot be correct. Only QAM and QPSK are used.
Exam Tip
DVB-T modulation = QAM and QPSK. Think 'D'VB-'T' = 'D'igital 'T'V uses 'Q'AM/'Q'PSK. DVB-T (Digital Video Broadcasting - Terrestrial) uses QAM and QPSK modulation. Not FM/FSK, not AM/OOK - just QAM and QPSK.
Memory Aid
DVB-T modulation = QAM and QPSK. Think 'D'VB-'T' = 'Q'AM/'Q'PSK. DVB-T (Digital Video Broadcasting - Terrestrial) uses QAM and QPSK modulation. Important for digital TV operation.
Real-World Example
Amateur television DVB-T signals: They use QAM (Quadrature Amplitude Modulation) and QPSK (Quadrature Phase Shift Keying) modulation. These are digital modulation schemes used for digital television. DVB-T is the standard for digital terrestrial TV. This is what modulation types are used - QAM and QPSK.
Source & Coverage
Question Pool: 2024-2028 Question Pool
Subelement: E2B
Reference: 2024-2028 Question Pool · E2 - Operating Procedures
Key Concepts
Verified Content
Question from the official FCC Extra Class pool. Explanation reviewed by licensed amateur radio operators and mapped to the E2B topic.