The Wx radar in the aircraft I fly is wired through a weight-on-wheels switch so it doesn't actually transmit on the ground.
Hmm . . . I've squirted my beam up into threatening clouds before opening the taps on more than a few occasions. Often got useful returns.
Taxiing out at JSY and being stopped adjacent to the radar head. Bzzzzz Bzzzzz Bzzzzz on the headphones and even little movements on the old moving coil instruments. Vasectomy a waste of time on those nights. Nah, more than a few nippers given the spark of life thanks to that myth.
https://www.who.int/peh-emf/publicat...acts/fs226/en/