Introduction to wireless, quick on paper exercises.
The access points we have for the workshop come with 400mW radios. Measured in dBm how much is that?
Assuming We have good line of sight from our tower what is the path loss on a 20Km link at 2.412Ghz?
Lp (dB) =92.45 + 20 * (10log F) + 20 *(10log d)
How about at 5.4Ghz?
On our 20Km link how wide is the fresnel zone at it's widest point?
What is the link budget of a system with one 100mW radio with a 2dB gain antenna and one 30mW radio with a 3dB gain antenna over a distance of .1km (at 2.45ghz)? the receive sensitivity of both radios is -89dB?
What if the noise floor is -79dB?