A ground receiver station is receiving a signal at 100MHz transmitted from a ground transmitter at a height of 300m located at a distance of 1000km. It is coming via

Options

A. Ground wave
B. Space wave
C. Sky wave
D. Satellite communication

Answer

To solve the problem, we need to analyze the given information about the communication system. Here’s a step-by-step breakdown:

### Step 1: Identify the Frequency
The signal being received is at a frequency of 100 MHz. This frequency is significant because it helps determine the type of communication system being used.

**Hint:** Frequencies in the range of 30 MHz to 300 MHz are often used for VHF (Very High Frequency) communications, which can include various types of communication systems.

### Step 2: Determine the Distance
The distance from the transmitter to the receiver is given as 1000 km. This is a long-distance communication scenario.

**Hint:** Long-distance communication typically involves the use of specific technologies to ensure that signals can travel over vast distances without significant loss.

### Step 3: Consider the Height of the Transmitter
The transmitter is located at a height of 300 m. The height of the transmitter can affect the line of sight and the coverage area of the signal.

**Hint:** Higher transmitter heights can improve the range of communication by reducing obstructions and allowing signals to travel further.

### Step 4: Analyze the Type of Communication
Given the frequency of 100 MHz and the long distance of 1000 km, we can infer that this communication is likely to be satellite communication. Satellite communication systems often operate in the GHz range, but lower frequencies can also be used for certain applications.

**Hint:** Satellite communication is characterized by the use of satellites in orbit to relay signals over long distances, making it suitable for such scenarios.

### Step 5: Conclusion
Based on the analysis, the communication system in question is identified as satellite communication. This is due to the combination of the long distance, the frequency used, and the height of the transmitter.

**Final Answer:** The communication is via satellite communication.