Horn wiring?

I barely knew much, although I was a General class radio amateur, in 68 when I went to Navy electronics tech "A" school, Treasure Island, San Francisco. They had a pretty good course at that time, but nowadays, reading what they teach currently, it seems more like "black box" and very little component. Unfortunately I went through one of the last vacuum tube courses in the school, and soon after was converted to "all solid state." At the time we only got maybe 3-4 weeks of solid state theory, the rest of the school was vacuum tube stuff

I fixed GCA (ground controlled approach) or PAR RADAR and it was pretty much all vacuum tube. The receiver had been upgraded to a solid state system, partially, but the rest of the thing was (hundreds) of tubes