Radio broadcasting uses both Amplitude Modulation (AM) and Frequency Modulation (FM). AM is commonly used for AM broadcast bands, while FM is widely used for high-fidelity audio broadcasting. The two methods differ in how the information signal modifies the carrier: AM varies the carrier's amplitude, whereas FM varies its frequency.
Radio broadcasting uses ______.
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Question context
This question is part of 📡 Electronics and Communication Engineering (ECE) within the broader 🛠️ Engineering Essentials subject and appears in the PTS Pakistan Testing Service preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.