Skip distance does not depend on

Options

A. the frequency of signal transmitted
B. electron density of the layer
C. they get absorbed by troposphere
D. they get reflected by stratosphere

Explanation

To determine what the skip distance does not depend on, we need to analyze the factors that influence skip distance in communication systems.

### Step-by-Step Solution:

1. **Understanding Skip Distance**:
- Skip distance is the distance between the transmitter and the point on the Earth's surface where the sky wave first returns after being reflected by the ionosphere.

2. **Factors Affecting Skip Distance**:
- The skip distance is influenced by several factors, including:
- **Frequency of the Signal Transmitted**: Higher frequencies tend to skip further distances due to their ability to penetrate the ionosphere less effectively.
- **Electron Density of the Ionospheric Layer**: The electron density affects the reflection of the radio waves. Higher electron density can lead to lower frequencies being reflected, thus impacting skip distance.
- **Tropospheric Absorption**: Some frequencies can be absorbed by the troposphere, which affects the overall transmission and reflection of signals.

3. **Analyzing the Options**:
- The question asks for what skip distance does not depend on.
- The options include:
- Frequency of signal transmitted
- Electron density of the layer
- Absorption by the troposphere
- Reflection by the stratosphere

4. **Identifying the Correct Answer**:
- Skip distance does not depend on reflection by the stratosphere. The stratosphere does not play a significant role in the reflection of radio waves; instead, it is the ionosphere that reflects the waves. Therefore, the correct answer is that skip distance does not depend on the reflection by the stratosphere.

### Final Answer:
Skip distance does not depend on the reflection by the stratosphere.

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