[ARC5] Where Does Air Track Fit?

[Robert Eleazer]

The SCR-183 and RU/GF discussions leads me to ask where the Air Track Manufacturing Company of College Park, MD fits in all of this.

I have a piece of equipment, Glide Path Receiver, Type CDE-46120, part of Aircraft Radio Instrument Landing Equipment Model ZA, the other components of which are listed on a separate nameplate.  This set was made by Air Track for the Bureau of Ships!  Yes! Ships!  Contract date is 15 March 1940.  In addition to the nameplate, it is stamped "PBY-5A" in yellow paint on the case.

Anyone have any info on this set?  Of course College Park is where James H. Doolittle made the first blind instrument landing, so instrument landing equipment made there is especially interesting.  (However I think the first blind drunk landing probably was made during WWI.) 

And does anyone have any CB conversion info for the set?

Wayne