Me wrote:

The basic facts a Any commercial civilian Xband Radar will NOT even
come close to approching FCC RF Radiation Biologic Health Maximum
Radiation Power Densities even if you are right next to the antenna.
You are more likely to get hurt by the rotating antenna hiting you
in the head than from the RF Energy coming out of the antenna.
Wx Radar on Commecrcial Aircraft usually are left in Standby Mode
untill the aircraft has taxied onto the tarmac beside the active runway.
runway
Eve if they were activated, most xBand versions still don't have the
Power Density one foot in front of the antenna to approch the FCC RF
Radiation Biologic Health Maximum.
Military Radars are a totally different beast altogether, and there are
very strict operational rules for when they can be operated inside US
Water and Airspace.

On my plane the radar is 7.6 kw (xband). The manual says not to use it
on the ground especially around people. Also they have been know to
cause some sort of sparking on metal so fuel trucks are to be avoided.
Shop people are cautioned to make sure it is not emitting if in stby
mode, some do. The display will say STBY, the antenna not panning, but
it is emitting. Go figure. Small airplanes have xband not because it is
wimpy but because of antenna size constraints. These are 10 ro 12 inch
diameter "flat dish" antennas. Lots of waveguide-like openings on it.
Extreemly directional. And this is a small 6 seater plane.

Large weather radars, ground based are sband. Big antennas.

In the late 80's many radars dropped down to under 10 watts. Most under
one watt. Mainly due to improved signal processing. Even on large jets
with large dishes. With the lower power came more managable attenuation
affects in rain too.

You do not want your head one foot away from my radar when it is on. And
I wouln't let you try it, even if you asked.