On what bands may automatically controlled stations transmitting RTTY or data emissions communicate with other automatically controlled digital stations?
The correct answer is D: Anywhere in the 6-meter or shorter wavelength bands, and in limited segments of some of the HF bands. Automatically controlled stations transmitting RTTY or data emissions may communicate with other automatically controlled digital stations anywhere in the 6-meter or shorter wavelength bands, and in limited segments of some of the HF bands. This allows automatic-to-automatic communication in designated areas. For amateur radio operators, understanding these allocations helps when setting up automatic control stations. The rules provide specific frequency ranges for automatic control operation.
Exam Tip
Automatic-to-automatic = 6m and shorter bands, plus limited HF segments. Think 'A'utomatic = 'A'llowed on '6'm and shorter, plus some HF. Can operate anywhere in 6-meter and shorter bands, plus limited segments of some HF bands. Not all digital segments, not just Extra segments.
Memory Aid
"Automatic-to-automatic = 6m and shorter, plus limited HF. Think 'A'utomatic = 'A'llowed on '6'm and shorter, plus some HF. Can operate anywhere in 6-meter and shorter bands, plus limited segments of some HF bands."
Real-World Application
You operate an automatically controlled RTTY station. You can communicate with other automatic stations anywhere on 6 meters (50-54 MHz) and shorter bands (2 meters, 70 cm, etc.), plus in specific limited segments of some HF bands. You cannot operate automatic-to-automatic on all HF digital segments - there are restrictions.
Key Concepts
Why Other Options Are Wrong
Option A: Incorrect. Automatic control isn't permitted on all digital segments - there are specific restrictions on where automatic-to-automatic communication is allowed.
Option B: Incorrect. Automatic control isn't allowed anywhere in non-phone segments - there are specific band restrictions.
Option C: Incorrect. Automatic control isn't limited to Extra Class segments only - it's allowed in broader areas including 6 meters and shorter.
题目解析
The correct answer is D: Anywhere in the 6-meter or shorter wavelength bands, and in limited segments of some of the HF bands. Automatically controlled stations transmitting RTTY or data emissions may communicate with other automatically controlled digital stations anywhere in the 6-meter or shorter wavelength bands, and in limited segments of some of the HF bands. This allows automatic-to-automatic communication in designated areas. For amateur radio operators, understanding these allocations helps when setting up automatic control stations. The rules provide specific frequency ranges for automatic control operation.
考试技巧
Automatic-to-automatic = 6m and shorter bands, plus limited HF segments. Think 'A'utomatic = 'A'llowed on '6'm and shorter, plus some HF. Can operate anywhere in 6-meter and shorter bands, plus limited segments of some HF bands. Not all digital segments, not just Extra segments.
记忆口诀
Automatic-to-automatic = 6m and shorter, plus limited HF. Think 'A'utomatic = 'A'llowed on '6'm and shorter, plus some HF. Can operate anywhere in 6-meter and shorter bands, plus limited segments of some HF bands.
实际应用示例
You operate an automatically controlled RTTY station. You can communicate with other automatic stations anywhere on 6 meters (50-54 MHz) and shorter bands (2 meters, 70 cm, etc.), plus in specific limited segments of some HF bands. You cannot operate automatic-to-automatic on all HF digital segments - there are restrictions.
错误选项分析
Option A: Incorrect. Automatic control isn't permitted on all digital segments - there are specific restrictions on where automatic-to-automatic communication is allowed. Option B: Incorrect. Automatic control isn't allowed anywhere in non-phone segments - there are specific band restrictions. Option C: Incorrect. Automatic control isn't limited to Extra Class segments only - it's allowed in broader areas including 6 meters and shorter.
知识点
Automatic control, RTTY/data emissions, Automatic-to-automatic, Band segments
Verified Content
Question from official FCC General Class question pool. Explanation reviewed by licensed amateur radio operators.