Recall that from the constraints outlined in Sec 19.5 it had been decided that the feed turret should be cubical in shape. Fig 19.7 shows the placement of feeds on the turret. The phase-centers of all the feeds are coincident with the paraboloid focus. The space between the turret and the feed is utilized for mounting the front-end electronics. There are six bands altogether, MHz19.2, MHz, MHz, MHz, MHz and MHz. The 50 MHz feed19.3 is affixed onto the feed support legs and not onto the turret. As such it is in focus at all times. The MHz and MHz feeds are mounted on the same turret face.
Each type of feed - its design and performance are briefly outlined in the following sections. More information can be found in .