Yup. Trying to help the dude out... I figured with all the smart fellows around here (to say nothing of the advanced average age) one of ya'll may have actually operated one in the past and come back with "Yah... That's the doohicky that..."It's located on several different websites/forums, he's obviously put the feelers out to several places.
No problem.LMFAO!! Thanks for making my day!
Maybe its the support element for one. This looks like a selector used for signal isolation, the fact that the end of throw on the switch is a mechanical post tells me that it was meant to be robust and that it probably took some effort to turn, also that it was moving something mechanically (an electronic switch would not need the stops). The lack of any kind of supports, rails, bosses, etc internally makes me think of a waveguide (mechanical amplifier/filter). It could be a pre-selector for a directional signal system but it lacks the supporting elements to be the actual system. You are right that the simple mechanism feels like a part of some form of early beaconing system.