Free-space loss

• The equation we're looking for is:

• • Lp (dB) =92.45 + 20 * (10log F) + 20 *(10log d)
  • Where D is distance in KM and F is the Frequency in Ghz
  • So plug in some numbers:
  • • d = 6 (6Km) F=2.45 (2.45Ghz)
    • 116dB = 92.45 + (20 * log 6) + ( 20 * log 2.45)
  • So the free space loss on our 6Km link is 116dB