*Question G9D09:
What is the primary use of a Beverage antenna?*  

*Correct Answer is  A: Directional receiving for MF and low HF bands*  

### AI Response: (may contain errors)  

The correct answer is: **A: Directional receiving for MF and low HF bands**

### Explanation:

1. **Why the correct answer is correct:**
   - A Beverage antenna is a long wire antenna used primarily for receiving signals. It is known for its excellent directional properties and low noise reception, making it ideal for medium frequency (MF) and low high frequency (HF) bands. The antenna is typically several wavelengths long and laid close to the ground, which enhances its ability to receive signals from a specific direction while rejecting noise from other directions.

2. **Why the other choices are incorrect:**
   - **B: Directional transmitting for low HF bands**  
     The Beverage antenna is not typically used for transmitting because it is inefficient as a transmitting antenna due to its low radiation resistance and the fact that it is designed to be non-resonant.
   
   - **C: Portable direction finding at higher HF frequencies**  
     Beverage antennas are not portable due to their long length, often hundreds of meters, and they are not designed for higher HF frequencies. They are fixed installations used for receiving rather than portable direction finding.
   
   - **D: Portable direction finding at lower HF frequencies**  
     Similar to choice C, Beverage antennas are not portable and are not used for direction finding. They are fixed, long wire antennas used for receiving signals from a specific direction.

### Useful Information:

- **Length and Orientation:**  
  The length of a Beverage antenna is typically between 1 and 3 wavelengths at the frequency of interest. It is oriented in the direction from which the signals are to be received.

- **Reception Characteristics:**  
  The Beverage antenna has a unidirectional reception pattern, which means it is sensitive to signals coming from one direction and less sensitive to signals from other directions. This makes it particularly useful for reducing interference and noise from unwanted directions.

Understanding the specific use and characteristics of the Beverage antenna helps in identifying its primary application in amateur radio operations.