I don't have a strong mathematical understanding of logarithms so I would like some help with understanding the formula - it's a bit confusing for me as it is
1) What is the meaning of 20*logf and 20*logd
2) What is the significance of the 20*
3) How would I calculate this on a calculator
The Revision slide for reference
Lp = 36.6 + (20*log10(F)) + (20 log10(D))
Lp = free-space path loss between antennas (in dB)
F = frequency in MHz
D = path length in miles