A radio communications link is to be established via the ionosphere. The maximum virtual
height of the layer is 100 km at the midpoint of the path and the critical frequency is 2 MHz. The
distance between stations is 600 km. determine the optimum working frequency?
A. 6.32 MHz
B. 2.1 MHz
C. 5.4 MHz
D. 1.8 MHz
height of the layer is 100 km at the midpoint of the path and the critical frequency is 2 MHz. The
distance between stations is 600 km. determine the optimum working frequency?
A. 6.32 MHz
B. 2.1 MHz
C. 5.4 MHz
D. 1.8 MHz