manufactured by Wells-Gardner
These were used as liaison receivers aboard bombers and other large aircraft in WWII. See the link to the B-17 bomber pictures on the link list. A typical companion transmitter was the ART-13. The liaison receiver was used to communicate with the headquarters airfields at long distances as needed. A typical ground-based receiver with which comunication took place was the BC-779 or other Hammarlund SP-200 series receiver. The typical ground base had a half dozen or more rack-mounted SP-200s.