Link Budget Practice Problems Problem 1 A cellular sys

Link Budget Practice Problems
Problem 1
A cellular system operating on 840Mhz has an output power of 40watts. The transmit antenna has 18dBi of gain with feedline losses of 3dB. The path is 30 miles long and the receive antenna has 0dBi of gain and line losses of 1dB. The receive sensitivity is -60dBm. Will this system work?
Problem 2
K-98.1 FM wants to know if its 1000 watt transmitter is enough to reach listeners in a town 75 miles away. The transmitter feeds an antenna with 9dBd of gain and feedline losses of .7dB. The receivers usually have no antenna gain relative to a dipole and about 2dB of line loss and have a sensitivity of -101.7dBm. What do you tell them?
Problem 3
We are building a paging system. The receivers we are using have a specified sensitivity of -104dBm. What is the required signal if we assume generally accepted practice?
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