Deep Dive: E2C12
The correct answer is C: Latency. What indicates the delay between a control operator action and the corresponding change in the transmitted signal is latency. Latency is the time delay in a system. For amateur radio operators, this is important for remote control operation. Understanding this helps when operating remotely.
Why Other Answers Are Wrong
Option A (Jitter): Incorrect. Jitter is variation in timing, not delay - latency is the delay. Jitter isn't the delay. Option B (Hang time): Incorrect. Hang time is how long a repeater stays on after transmission, not the delay in remote control - latency is the delay. Hang time isn't the delay. Option D (Anti-VOX): Incorrect. Anti-VOX is a circuit to prevent false triggering, not the delay - latency is the delay. Anti-VOX isn't the delay.
Exam Tip
Delay between control action and signal change = latency. Think 'L'atency = 'L'ag time. Latency is the time delay between control operator action and corresponding change in transmitted signal. Not jitter, not hang time, not anti-VOX - just latency.
Memory Aid
Delay between control action and signal change = latency. Think 'L'atency = 'L'ag time. Latency is the time delay between control operator action and corresponding change in transmitted signal. Important for remote control operation.
Real-World Example
Remote control operation: When you press a button to transmit, there's a delay before the signal actually transmits. This delay is called latency - it's the time between your action and the corresponding change in the transmitted signal. This is what indicates the delay - latency.
Source & Coverage
Question Pool: 2024-2028 Question Pool
Subelement: E2C
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 E2C topic.