I am trying to calculate the pathloss and sensitivity of QO-100 transponder. Calculation:
Au = 20 x ( - 4.622 - log f - log L)
Au - pathloss in dB
f - frequency in GHz
L - distance in km
My calclation shows that the pathloss is around -192 dB.
My receiving floor:
-192 dB + 33dBm + 24dBi + 20dB = -115dBm (0,4uV/50 ohm)
What's Yours receiving floor?