Question

Find the MUF for the wave operating at a critical frequency 6MHz and having the skip distance d as 25km and virtual height of 100km in the ionosphere layer.

(a) 6.05MHz

(b) 1.25MHz

(c) 1.025MHz

(d) 3.25MHz

Answer 1

Correct answer is (a) 6.05MHz

Easy explanation: \(f_{MUF}=f_c \sqrt{((\frac{d}{2h})^2+1)}=6×10^6×\sqrt{((\frac{25}{2×100})^2+1)}=6.05MHz\)