Deep Dive: E2D02
The correct answer is D: Grid square. What information replaces signal-to-noise ratio when using the FT8 or FT4 modes in a VHF contest is grid square. In VHF contests, grid square replaces SNR in FT8/FT4 exchanges. For amateur radio operators, this is important for VHF contest operation. Understanding this helps when participating in VHF contests.
Why Other Answers Are Wrong
Option A (RST report): Incorrect. RST report doesn't replace SNR in FT8/FT4 VHF contests - grid square replaces SNR. RST isn't used. Option B (State abbreviation): Incorrect. State abbreviation doesn't replace SNR in FT8/FT4 VHF contests - grid square replaces SNR. State abbreviation isn't used. Option C (Serial number): Incorrect. Serial number doesn't replace SNR in FT8/FT4 VHF contests - grid square replaces SNR. Serial number isn't used.
Exam Tip
FT8/FT4 VHF contest = grid square replaces SNR. Think 'F'T8/'F'T4 'V'HF = 'G'rid 'S'quare replaces 'S'NR. In VHF contests, grid square replaces signal-to-noise ratio in FT8/FT4 exchanges. Not RST, not state, not serial number - just grid square.
Memory Aid
FT8/FT4 VHF contest = grid square replaces SNR. Think 'F'T8/'F'T4 'V'HF = 'G'rid 'S'quare. In VHF contests, grid square replaces signal-to-noise ratio in FT8/FT4 exchanges. Important for VHF contest operation.
Real-World Example
Using FT8 or FT4 modes in a VHF contest: Instead of sending signal-to-noise ratio (like +3 dB), you send your grid square (like EM15). Grid square is more useful in VHF contests for determining distance and propagation. This is what replaces SNR - grid square in FT8/FT4 VHF contests.
Source & Coverage
Question Pool: 2024-2028 Question Pool
Subelement: E2D
Reference: 2024-2028 Question Pool · E2 - Operating Procedures
Key Concepts
Verified Content
Question from the official FCC Extra Class pool. Explanation reviewed by licensed amateur radio operators and mapped to the E2D topic.