View Full Version : Radar Dish
bigbob
19th Apr 2010, 11:35
Anyone know why some rotating primary radar dishes have a fin at the back?
Cheers,
Bigbob.
Spitoon
19th Apr 2010, 11:55
Don't know for sure - never thought about it before - but I would guess it's something to do with reducing or balancing the effects of wind on rotation of the antenna.
welliewanger
19th Apr 2010, 14:36
I don't know for sure either. Spitoon's theory that it's to balance aerodynamic forces sounds reasonable. I'd always thought (guessed) that it was used as a counterweight.