Question

(4) 8.471 x 109 m
23. An information signal of 150 MHz is to be sent
across a distance of 40 km. Which mode of
communication is suitable?
(1) Ground wave propagation
(2) Space wave propagation
(3) Sky wave propagation
(4) Satellite communication
Line of sight (LOS) communication is also known a​

Answer 1

satellite communication