Broadcast Audio Corp. Channels, ID

[DOX-EMF]

I have a couple of these Broadcast Audio stereo channels I want to build out but no info to be found. Your basic input and output assigns, nice stereo fader with cue. Big opto based mute button . Small pair of input transformers. Have one mono strip with 3 band EQ and all the above. Only module ID found is 385 channel. Can't even see one of these consoles in old B'Cast news mags. Seems to be early 8s maybe. Suppose I should take pix.