Deep Dive: G2E06
The correct answer is B: 170 Hz. The most common frequency shift for RTTY emissions in the amateur HF bands is 170 Hz. This is the standard shift between mark and space frequencies for RTTY. For amateur radio operators, this ensures compatibility - everyone uses 170 Hz shift. Understanding this helps when operating RTTY.
Why Other Answers Are Wrong
Option A (85 Hz): Incorrect. 85 Hz is half the standard shift - 170 Hz is the standard for amateur RTTY. 85 Hz is too narrow. Option C (425 Hz): Incorrect. 425 Hz is wider than standard - 170 Hz is the standard shift. 425 Hz would cause compatibility issues. Option D (850 Hz): Incorrect. 850 Hz is much wider than standard - 170 Hz is the standard shift. 850 Hz would cause severe compatibility problems.
Exam Tip
RTTY frequency shift = 170 Hz. Think 'R'TTY = '1'70 Hz 'S'hift 'S'tandard. Most common frequency shift for RTTY in amateur HF bands. Not 85, 425, or 850 Hz - 170 Hz is the standard.
Memory Aid
RTTY frequency shift = 170 Hz. Think 'R'TTY = '1'70 Hz 'S'hift. Most common frequency shift for RTTY in amateur HF bands. Standard shift ensures compatibility. Not 85, 425, or 850 Hz.
Real-World Example
You operate RTTY on 20 meters. Your RTTY system uses 170 Hz shift between mark and space frequencies - this is the standard. Everyone uses 170 Hz shift, ensuring compatibility. If you used a different shift (like 85 Hz or 425 Hz), you wouldn't be able to communicate with other RTTY stations.
Source & Coverage
Question Pool: 2023-2027 Question Pool
Subelement: G2E
Reference: 2023-2027 Question Pool · G2 - Operating Procedures
Key Concepts
Verified Content
Question from the official FCC General Class pool. Explanation reviewed by licensed amateur radio operators and mapped to the G2E topic.