A patient in the ER complaining about a wound on their thigh…

A patient in the ER complaining about a wound on their thigh that has recently turned black.  After talking with the patient, you learn he is a farmhand that works with cattle and other livestock.  The doctor recommends an antibiotic prescription of ciprofloxacin.  The causative agent is most likely:

For the basestation described in the previous questoin, 4.5…

For the basestation described in the previous questoin, 4.5 km north of the basestation is a hill that rises 17m above the surrounding flat terrain. How much additional diffraction loss (in dB) will there be at 5km from the basestation to the north assuming the hill can be modeled by single knife-edge diffraction and that one of the panel antennas points due north? Assume the mobile is 2m high. Assume the answer for 4. in the previous question above is the RSL without diffraction. What will be the RSL 5km north of the basestation if diffraction is included?