Hi Wade
In trying to enhance the photos, was able to find out they are receivers -- thought it might be FSK stuff but looks like their were two receivers set up at each operating position possibly to listen on two frequencies....
In doing a bit more digging here I was able to find info on them:
TYPE CRV-4614B-D
Made by RCA --
here is another link with picture and a club that is using them (Univeristy of Texas Radio Club... Looks like they are seeking info on the ships this radio was used on......
http://n5xu.ece.utexas.edu/n5xu/sw.shtml
73
Mar, W3ZI