Uplinks are on 12GHz and downlinks on 14GHz. Satellites have gone through several generations and staff have interesting skills ranging from orbital mechanics through to microwave power RF.
One of the dishes is quite mobile and is used for tracking and commanding newly launched satellites.
At 12GHz the waveguide really looks like plumbing.
Smaller dishes are fixed and used for telemetry reception.
This next shot shows how RF gets up to the big mobile dish from below.
For more, there's a rather cheesy promo video here and a bit more about the steerable dish here.