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Maximum usable frequency (MUF) in F-regi...

Maximum usable frequency (MUF) in F-region layer is x, when the critical frequency is 60 MHz and the angle of incidence is `70^(@)`, then x is

A

150 MHz

B

170 MHz

C

175 MHz

D

190 MHz

Text Solution

Verified by Experts

`MUF=v_(c)sec i=60xx10^(6)xxsec70^(@)`
`=60xx10^(6)xx(1)/(0.342)`
`=175.43xx10^(6)Hz=175.43 MHz`
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