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 own carrier with 33dBm (2W) with 24dBi antenna is 20 dB over my noise floor. I am receiving with 80cm, LNB and SDR dongle. But I know that there are stations with better receiving conditions.
My receiving floor:
-192 dB + 33dBm + 24dBi + 20dB = -115dBm (0,4uV/50 ohm)
But I don't know what's the gain of receiving antenna of QO-100. Did anybody knows that? And are my calculations right?
What's Yours receiving floor?