Deep Dive: G2E01
The correct answer is D: LSB. The mode normally used when sending RTTY signals via AFSK with an SSB transmitter is LSB (Lower Sideband). RTTY on HF typically uses LSB, similar to voice on lower HF bands. For amateur radio operators, this ensures compatibility - everyone uses LSB for RTTY on HF. Understanding this helps when operating RTTY.
Why Other Answers Are Wrong
Option A (USB): Incorrect. USB is used for RTTY on higher frequencies, but on most HF bands, RTTY uses LSB. LSB is the standard for HF RTTY. Option B (DSB): Incorrect. DSB (Double Sideband) isn't used for RTTY - RTTY uses SSB (Single Sideband), specifically LSB on HF. Option C (CW): Incorrect. CW is a different mode - this question is about RTTY, not CW. RTTY uses LSB, not CW.
Exam Tip
RTTY via AFSK with SSB = LSB. Think 'R'TTY on 'H'F = 'L'ower 'S'ideband. RTTY on HF typically uses LSB, similar to voice on lower HF bands. Not USB (higher frequencies), not DSB or CW - LSB is standard for HF RTTY.
Memory Aid
RTTY via AFSK with SSB = LSB. Think 'R'TTY on 'H'F = 'L'ower 'S'ideband. RTTY on HF typically uses LSB. Standard for HF RTTY operation, similar to voice on lower HF bands.
Real-World Example
You operate RTTY on 20 meters using AFSK with an SSB transmitter. You use LSB (Lower Sideband) - this is the standard for RTTY on HF. Everyone uses LSB for RTTY on HF, ensuring compatibility. USB might be used on higher frequencies, but LSB is standard for most HF RTTY operation.
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.