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Data communication systems (A-level only)

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Question 3

Compare how Low Frequency (LF), High Frequency (HF), and Microwave signals are used to establish communication links beyond the line of sight.

For each of the three systems, you must describe:

  • A typical carrier frequency (or wavelength range).
  • How the electromagnetic waves travel or propagate from the transmitter to a receiver that is beyond the horizon.
  • A common practical application of this type of communication.
[6]
Markscheme

Data communication systems (A-level only) Questions

  1. A Level
  2. /Physics
  3. /Data communication systems (A-level only)

22 exam-style questions on AQA A Level Physics Data communication systems (A-level only), covering Principles of communication systems (A-level only), Transmission media (A-level only), Time-division multiplexing (A-level only), and Amplitude (AM) and frequency modulation (FM) techniques (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

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