Explain mechanism of ionospheric propagation. A high frequency radio link has to be established between two points at a distance of 2000 km, on the earth's surface. Considering the height of 200 km and critical frequency of 5Mhz.Calculate MVF for given path.

Mumbai University > Electronics Engineering > Sem 5 > Electromagnetic Engineering

Marks: 8 Marks

Year: Dec 2014

1. Mechanism of ionosphere propagation:

2. Given:

   h = 200 km

   d = 2000 km

   $f_c$ = 5MHz

   To find: MUF = ?

   Solution : $MUF=f_c \sqrt{1+\bigg(\dfrac{d}{2h}\bigg)^2} \\ MUF=(5 ×10^6 ) \sqrt{1+\bigg(\dfrac{2000 ×10^3}{2 ×200 ×10^3}\bigg)^2} \\ MUF = 25.495 MHz$