RF Radiation 150-200 W BUCs

Without a very sensitive vicinity RF meter, I'd say the amount would be between negligible and immeasurable. You probably get more radiation off the radium in your watch dial. And if you have a smartphone, you probably have more RF in your pocket than you can detect from the dish.

//greg//

I would regard it is prohibited to get any body part between the feed horn and the dish or in the cylindrical beam (same diameter as the dish) towards the satellite.

Anywhere in the vicinity of the feed horn aperture is really dangerous.  

In addition, I, personally, don't stand just behind the side of the dish where I might see the feed/sub reflector if I looked in that direction.

The power from the transmitter is spread across the dish with small amounts spilling over the edges. The power per unit area is tapered across the surface, such that at the edges of the dish the power per unit area is normally 10 to 16 dB lower than at the centre of the dish.

Avoiding complex calculation and making the simplifying and conservative assumption that the power is evenly spread across the whole dish.  A 3m diameter dish, for example, has an area of 70685 sq cm. If the 200 watts were spread evenly then the power per sq cm at the dish edge (coming from the feed/subreflector) would be 3 mW per sq cm. You could measure the actual level (expect something rather lower than 2 mW/sq cm) with a RAHAM detector held just beside the dish edge.  Most teleports will have such hand held meters for use checking leakage at joints along transmit waveguides etc.

Microwave energy causes body heating.  If you put your hands in front of a 1kW electric fire you will get the idea.  The blood in your hands and sweat takes the heat away to some extent.  The particular hazard with microwaves is that it is not visible like a fire or the sun  (you don't see a bright glowing red/orange light at the feed horn) and the way microwaves warm the body below the surface rather than just on the surface.  The eye lens has no cooling blood flow through it and is particularly sensitive to being heated. So, never look down a transmit waveguide.

Mobile phones even if just 1 watt radiate that power almost adjacent to the human body so the heating power per sq cm can be quite high.  There is also the added irritation of the TDMA power pulsing like a bright flashing light - no wonder some people claim to find mobile phones causing headaches!

If you got hot and a headache it might well have happened even if the transmitter was off.  Ventilation is important.  Beware of possible oxygen deficiency in any enclosed space. Ships have suitable %oxygen meters for use before entering spaces where rusting iron may exist.

Best regards, Eric.

Eric and Greg, thank you so much for the replies

Due to the nature of my work I spend a lot of time inside C-band domes, most of the time while the I-Direct is in the network as in vessels like Cruise Ships the officers do not allow any downtime.

So next time... rx enable off... to be safe just in case

Thanks !