*Question E9H07:
What is the function of a Beverage antenna’s termination resistor?*  

*Correct Answer is  B: Absorb signals from the reverse direction*  

### AI Response: (may contain errors)  

A Beverage antenna is a type of long-wire antenna primarily used for receiving low-frequency signals. It is known for its directional properties, which make it effective for reducing noise and improving signal reception from a specific direction.

### Explanation:

1. **Correct Answer: B - Absorb signals from the reverse direction**

   - The termination resistor in a Beverage antenna is placed at the far end of the antenna wire. Its primary function is to absorb signals that arrive from the reverse direction, preventing them from reflecting back along the wire. This enhances the antenna's directional characteristics by reducing unwanted signals from the rear, thus improving the front-to-back ratio.

2. **Why the other choices are incorrect:**

   - **Choice A: Increase the front-to-side ratio**
     - The termination resistor does not specifically affect the front-to-side ratio. It is mainly concerned with the front-to-back ratio by absorbing reverse signals.

   - **Choice C: Decrease SWR bandwidth**
     - The termination resistor does not influence the standing wave ratio (SWR) bandwidth. SWR is more related to impedance matching and antenna tuning rather than the termination resistor's function.

   - **Choice D: Eliminate harmonic reception**
     - Harmonic reception is not directly affected by the termination resistor. Harmonics are typically managed through filtering and not by the antenna's termination.

### Additional Notes:

- The termination resistor should match the characteristic impedance of the antenna to effectively absorb the reverse signals.
- A typical rule of thumb for a Beverage antenna is to use a termination resistor value close to the antenna's characteristic impedance, often around 450 to 600 ohms.

Understanding the role of the termination resistor helps in optimizing the performance of a Beverage antenna for directional reception.