What is the direction of an ascending pass for an amateur satellite?
The correct answer is C: From south to north. The direction of an ascending pass for an amateur satellite is from south to north. Ascending pass means the satellite is moving from south to north (crossing the equator going north). For amateur radio operators, this is important for satellite operation. Understanding this helps when tracking satellites.
Exam Tip
Ascending pass = from south to north. Think 'A'scending = 'A'pproaching north (from south). Ascending pass means satellite is moving from south to north. Not west-east, not east-west, not north-south (descending) - just south to north.
Memory Aid
"Ascending pass = from south to north. Think 'A'scending = 'A'pproaching north. Ascending pass means satellite is moving from south to north. Important for satellite tracking."
Real-World Application
An ascending pass for an amateur satellite: The satellite is moving from south to north (crossing the equator going north). This is the ascending pass - the satellite is ascending in latitude (going from lower to higher latitude in the northern hemisphere). Descending pass would be from north to south. This is the direction - from south to north.
Key Concepts
Why Other Options Are Wrong
Option A: Incorrect. From west to east is the orbital direction, not ascending pass - ascending pass is north-south direction. West-east is wrong.
Option B: Incorrect. From east to west is opposite orbital direction, not ascending pass - ascending pass is from south to north. East-west is wrong.
Option D: Incorrect. From north to south is descending pass, not ascending - ascending is from south to north. North-south is descending.
题目解析
The correct answer is C: From south to north. The direction of an ascending pass for an amateur satellite is from south to north. Ascending pass means the satellite is moving from south to north (crossing the equator going north). For amateur radio operators, this is important for satellite operation. Understanding this helps when tracking satellites.
考试技巧
Ascending pass = from south to north. Think 'A'scending = 'A'pproaching north (from south). Ascending pass means satellite is moving from south to north. Not west-east, not east-west, not north-south (descending) - just south to north.
记忆口诀
Ascending pass = from south to north. Think 'A'scending = 'A'pproaching north. Ascending pass means satellite is moving from south to north. Important for satellite tracking.
实际应用示例
An ascending pass for an amateur satellite: The satellite is moving from south to north (crossing the equator going north). This is the ascending pass - the satellite is ascending in latitude (going from lower to higher latitude in the northern hemisphere). Descending pass would be from north to south. This is the direction - from south to north.
错误选项分析
Option A: Incorrect. From west to east is the orbital direction, not ascending pass - ascending pass is north-south direction. West-east is wrong. Option B: Incorrect. From east to west is opposite orbital direction, not ascending pass - ascending pass is from south to north. East-west is wrong. Option D: Incorrect. From north to south is descending pass, not ascending - ascending is from south to north. North-south is descending.
知识点
Ascending pass, Amateur satellite, From south to north, Satellite direction
Verified Content
Question from official FCC Extra Class question pool. Explanation reviewed by licensed amateur radio operators.