*Question T7B07:
Which of the following can reduce overload of a VHF transceiver by a nearby commercial FM station?*  

*Correct Answer is  D: Installing a band-reject filter*  

### AI Response: (may contain errors)  

To address the question about reducing overload of a VHF transceiver by a nearby commercial FM station, let's analyze the correct answer and the other options.

### Correct Answer: D - Installing a band-reject filter

- **Explanation**: A band-reject filter (also known as a notch filter) is designed to attenuate signals within a specific frequency range while allowing signals outside that range to pass through. By installing a band-reject filter tuned to the frequency of the nearby commercial FM station, you can effectively reduce the interference and overload caused by that station. This helps protect the transceiver from being overwhelmed by strong signals that could distort or block desired communications.

### Why the Other Choices are Incorrect:

- **A: Installing an RF preamplifier**  
  - **Explanation**: An RF preamplifier amplifies weak signals before they reach the receiver. While it can improve the reception of weak signals, it can also amplify unwanted strong signals, potentially worsening the overload issue rather than alleviating it.

- **B: Using double-shielded coaxial cable**  
  - **Explanation**: Double-shielded coaxial cable provides better protection against external RF interference and reduces signal leakage. However, it does not specifically address the issue of overload from strong nearby signals. It may help with overall signal integrity but won't prevent overload from a strong signal.

- **C: Installing bypass capacitors on the microphone cable**  
  - **Explanation**: Bypass capacitors are used to filter out high-frequency noise from power supplies or other sources. While they can help reduce noise in audio signals, they do not address the problem of RF overload from strong nearby signals affecting the transceiver.

### Summary

To effectively reduce overload from a nearby commercial FM station, the best solution is to use a band-reject filter, as it specifically targets and attenuates the unwanted frequency range. The other options either do not address the problem directly or could exacerbate it.