What aspect of an analog slow-scan television signal encodes the brightness of the picture?

Q: What aspect of an analog slow-scan television signal encodes the brightness of the picture?

The correct answer is A: Tone frequency. The correct answer is A: Tone frequency. What aspect of an analog slow-scan television signal encodes the brightness of the picture is tone frequency. In SSTV, brightness is encoded by the frequency of the tone. For amateur radio operators, this is important for SSTV operation. Understanding this helps when operating SSTV.

Previous Next

Deep Dive: E2B10

The correct answer is A: Tone frequency. What aspect of an analog slow-scan television signal encodes the brightness of the picture is tone frequency. In SSTV, brightness is encoded by the frequency of the tone. For amateur radio operators, this is important for SSTV operation. Understanding this helps when operating SSTV.

Why Other Answers Are Wrong

Option B: Incorrect. Tone amplitude isn't how brightness is encoded - brightness is encoded by tone frequency, not amplitude. Amplitude isn't brightness. Option C: Incorrect. Sync amplitude isn't how brightness is encoded - brightness is encoded by tone frequency, not sync amplitude. Sync amplitude isn't brightness. Option D: Incorrect. Sync frequency isn't how brightness is encoded - brightness is encoded by tone frequency, not sync frequency. Sync frequency isn't brightness.

Exam Tip

SSTV brightness encoding = tone frequency. Think 'S'STV 'B'rightness = 'S'ignal 'B'rightness = 'F'requency. In SSTV, brightness is encoded by the frequency of the tone. Not tone amplitude, not sync amplitude, not sync frequency - just tone frequency.

Memory Aid

SSTV brightness encoding = tone frequency. Think 'S'STV 'B'rightness = 'F'requency. In SSTV, brightness is encoded by the frequency of the tone. Important for SSTV operation.

Real-World Example

Analog slow-scan television (SSTV): The brightness of the picture is encoded by the frequency of the tone. Different frequencies represent different brightness levels. For example, a higher frequency might represent brighter pixels, a lower frequency might represent darker pixels. This is how brightness is encoded - tone frequency.

Source & Coverage

Question Pool: 2024-2028 Question Pool

Subelement: E2B

Reference: 2024-2028 Question Pool · E2 - Operating Procedures

Key Concepts

Analog slow-scan television SSTV Brightness Tone frequency

Official Pool Source

Question text and answer key are synchronized with the current NCVEC Extra Class pool and mapped to the E2B topic.