Question
How many horizontal lines make up a fast-scan (NTSC) television frame?
Answer Options
- A) 30
- B) 60
- C) 525
- D) 1080
Correct Answer: C
Explanation
Fast-Scan Television (FSTV) used in analog amateur operations often follows the NTSC (National Television System Committee) standard, which was the long-standing analog system in North America. This system defines the fundamental structure of the television image for both broadcasting and amateur use.
A complete NTSC television frame is composed of 525 horizontal lines. This total number of lines is divided into two alternating fields (interlaced scanning) that are displayed 60 times per second (30 frames per second). This structure creates a smooth, moving image for the viewer and is the baseline for most analog amateur TV (ATV) transmissions.
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