At 2.4 GHz, what is the free-space path loss in dB?

The free-space path loss (FSPL) formula calculates the loss of signal strength in a wireless communication system as the signal travels through free space. The formula for FSPL in decibels (dB) at a frequency of 2.4 GHz can be calculated using the following formula:

FSPL (in dB) = 20 * log10(distance in meters) + 20 * log10(frequency in MHz) - 147.55

For a frequency of 2.4 GHz (which is equivalent to 2400 MHz):

FSPL (in dB) = 20 * log10(distance in meters) + 20 * log10(2400) - 147.55

Assuming you want to calculate the free-space path loss for a certain distance in meters at a frequency of 2.4 GHz, you can use this formula by substituting the distance value into the equation. For example, if the distance is 1000 meters:

FSPL (in dB) = 20 * log10(1000) + 20 * log10(2400) - 147.55

FSPL (in dB) = 20 * 3 + 20 * 3.38 - 147.55

FSPL (in dB) = 60 + 67.6 - 147.55

FSPL (in dB) = -20.95 dB

So, at a frequency of 2.4 GHz and a distance of 1000 meters, the free-space path loss would be approximately -20.95 dB.