You are to perform a link budget analysis of a mode S transponder to determine t

You are to perform a link budget analysis of a mode S transponder to determine t

You are to perform a link budget analysis of a mode S transponder to determine the maximum range that two aircraft can communicate. Show all of the steps to calculate the maximum distance in nautical miles. You are free to use the internet or other sources but you need to cite your sources. You can work in groups of up to 3. Be careful with the units.
Typical Mode S transponder specifications.
Transmit power 125W (may be more useful in dBm)
Transmitter and receiver antenna gains are both 3dBi
Receiver sensitivity -85dBm
Required signal to noise ratio (SNR) above the minimum for system operation 10dB