Mercator Flashcards
1
Q
What level of the atmosphere is electromagnetic energy reflected
A
ionosphere
2
Q
What type of electromagnetic waves travel far distances
A
Low frequency ground waves
3
Q
What is required for a radio system that is both transmitting and receiving with antenna’s
A
all antenna need to have the same polarization so they are most effective
4
Q
What processes are required for the long distance transmission of radio waves
A
Reflection and refraction
5
Q
What happens when two radio waves arrive at the same point in time and space
A
interference
6
Q
What is polarization
A
Direction of the electric component of the field. “which way it faces”
