Questions $4$

a$)$ Two stations have $1\mathrm{.}0O$ commumication links with half wave antenns at $100km$ dutance If the transmutter transmits $5KW$ power at $300MHz,$ what is the maxumum power recerved, if the maxumum duectrve gain of each anteana is $164?$ denaty of the sososphese of the uefractive moder is $0\mathrm{.}8$ at $10MHz?$ Alo, find

the range for the maxumum usable fiequency $($MUF$)$ of $10MHz$ and $11$ the dielectric constant of the layer

$(10$ Marks$)$