Re: S-band uplink
Very approximately, the power density from that antenna if you are behind the feed is never much more than around 104 W/m^2 which is high, but only about twice the generally regarded safe limit for human exposure at S-band of around 50 W/m^2 (compared to about 1kW/m^2 for full sunlight). Basically the 400kW from the feed is spread over the 70m diameter antenna's 3848m^2 area moderately evenly, then reflected back towards the satellite.
But that sort of power density will extend a long way out, and is very much higher than would be considered a normal test for any aircraft electronics system!
Biting the hand that feeds IT
