What does the term LOS communication mean? Name the types of waves that are used for this communication. Which of the two height of transmitting antenna and height of receiving antenna can effect the range over which this mode of communication remains effective?

Explanation

### Step-by-Step Text Solution:

1. **Definition of LOS Communication:**
- The term "LOS communication" stands for "Line-of-Sight communication." It refers to a mode of radio wave propagation where the waves travel in a straight line from the transmitting antenna to the receiving antenna without any obstruction.

2. **Types of Waves Used in LOS Communication:**
- The types of waves that are commonly used for LOS communication include:
- **Space Waves:** These waves travel directly from the transmitter to the receiver.
...