*Question E2C12:
What indicates the delay between a control operator action and the corresponding change in the transmitted signal?*  

*Correct Answer is  C: Latency*  

### AI Response: (may contain errors)  

**Explanation:**

1. **Correct Answer: Latency**

   - **Latency** refers to the time delay between a control operator's action and the resulting change in the transmitted signal. It is a measure of how quickly a system responds to inputs. In the context of radio communications, latency is crucial because it affects the real-time interaction between operators.

2. **Why the Other Choices are Incorrect:**

   - **Jitter**: This term describes the variability in time delay in packet delivery over a network. It is not the same as latency, which is a consistent delay. Jitter is more about the variation in delay rather than the delay itself.

   - **Hang time**: This refers to the period a repeater remains active after the transmission has ended. It is not related to the delay between an operator's action and the signal change.

   - **Anti-VOX**: This is a feature used to prevent a voice-operated switch (VOX) from being triggered by background noise. It is unrelated to the delay in signal change.

3. **Useful Concepts:**

   - **Latency** is often measured in milliseconds (ms) and can be affected by various factors such as signal processing time, network congestion, and propagation delay.

Understanding latency is important for ensuring effective communication, especially in scenarios requiring quick responses, such as emergency communications or remote control operations.