Part 1: A signal starts at point X, then travels through point Y to point Z. Between point X and Y, the signal loses 8 dB of strength. At point Y, the signal receives a boost of 10 dB. Then, on the way to point Z, the signal loses another 8 dB. What is the total change in dB between points X and Z?
Part 2: If the signal from part 1 above stats at point X with a power of 100 Watts. What will be the power of the signal at point Z?
Part 3: Assume that the signal needs to arrive at point Z with a minimum power of 50 Watts. What should the initial strength of the signal be increased to?