I have just come by a sky dish and notice that there appear to be different
positions for the cable inlet.
The connection is in like a notched groove, with numbers 1 to 5 above the
notches.
Effectively the cable connection itself can move into the notch cutouts.
These have become worn and the connection has moved - so the questions a

What difference does this setting make?
Presumably this affects the receipt of signal?

TIA

Phil