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| 1. |
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 isA. 150 MHzB. 170 MHzC. 175 MHzD. 190 MHz |
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Answer» `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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