What's that hole on Klystron 9?

Have you ever wondered why there is that small spot at the center of our Klystron 9 radar that is always blank?

There's a good scientific reason all weather radars have this blank space.

Fun facts about Klystron 9

Klystron 9 replaced our Doppler 9000 in 2009 and covered the Tampa Bay area until 2020, when it was replaced and upgraded to new Klystron. The upgrade from the Doppler 9000 to Klystron 9 gave us almost three times the power.