How is color information sent in analog SSTV?
The correct answer is A: Color lines are sent sequentially. How color information is sent in analog SSTV is that color lines are sent sequentially. SSTV sends color information line by line, one color at a time. For amateur radio operators, this is important for SSTV operation. Understanding this helps when operating SSTV.
Exam Tip
SSTV color information = color lines sent sequentially. Think 'S'STV 'C'olor = 'S'equential 'C'olor lines. SSTV sends color information line by line, one color at a time. Not subcarrier, not color burst, not AM on FM - just sequential color lines.
Memory Aid
"SSTV color information = color lines sent sequentially. Think 'S'STV 'C'olor = 'S'equential. SSTV sends color information line by line, one color at a time. Important for SSTV operation."
Real-World Application
Color information in analog SSTV: Color lines are sent sequentially. For example, red lines are sent, then green lines, then blue lines. This is different from fast-scan TV which uses simultaneous color. SSTV takes longer because colors are sent one at a time. This is how color information is sent - sequentially.
Key Concepts
Why Other Options Are Wrong
Option B: Incorrect. Color information on 2.8 kHz subcarrier isn't how SSTV works - SSTV sends color lines sequentially, not on a subcarrier. Subcarrier isn't used.
Option C: Incorrect. Color burst at end of each line isn't how SSTV works - SSTV sends color lines sequentially, not color bursts. Color burst isn't used.
Option D: Incorrect. Color amplitude modulated on FM intensity signal isn't how SSTV works - SSTV sends color lines sequentially. AM on FM isn't used.
题目解析
The correct answer is A: Color lines are sent sequentially. How color information is sent in analog SSTV is that color lines are sent sequentially. SSTV sends color information line by line, one color at a time. For amateur radio operators, this is important for SSTV operation. Understanding this helps when operating SSTV.
考试技巧
SSTV color information = color lines sent sequentially. Think 'S'STV 'C'olor = 'S'equential 'C'olor lines. SSTV sends color information line by line, one color at a time. Not subcarrier, not color burst, not AM on FM - just sequential color lines.
记忆口诀
SSTV color information = color lines sent sequentially. Think 'S'STV 'C'olor = 'S'equential. SSTV sends color information line by line, one color at a time. Important for SSTV operation.
实际应用示例
Color information in analog SSTV: Color lines are sent sequentially. For example, red lines are sent, then green lines, then blue lines. This is different from fast-scan TV which uses simultaneous color. SSTV takes longer because colors are sent one at a time. This is how color information is sent - sequentially.
错误选项分析
Option B: Incorrect. Color information on 2.8 kHz subcarrier isn't how SSTV works - SSTV sends color lines sequentially, not on a subcarrier. Subcarrier isn't used. Option C: Incorrect. Color burst at end of each line isn't how SSTV works - SSTV sends color lines sequentially, not color bursts. Color burst isn't used. Option D: Incorrect. Color amplitude modulated on FM intensity signal isn't how SSTV works - SSTV sends color lines sequentially. AM on FM isn't used.
知识点
Color information, Analog SSTV, Sequentially, Color lines
Verified Content
Question from official FCC Extra Class question pool. Explanation reviewed by licensed amateur radio operators.