The total distance between the transmitting and receiving antenna of
a microwave link at 10GHz, is 30 Km. the height of the Tx antenna is
above ground level is 20 m. the maximum acceptable total path loss is
169 dB.
Furthermore there is hill located 10 km away from the transmitter (Tx)
antenna with a height of 80m.

calculate the height of the receiver antenna for the path loss to be
just equal to the maximum acceptable value?

Whats the height of the receive antenna? (required)

Is the hill directly in the line of sight of the receive antenna?
yes it is b/w the LOS