Info, Pictures and Schematic for the AN/ARR-3 can be viewed here http://www.vk2bv.org/museum/arr-3.htm Cheers Dave VK4KDP > Jim wrote: > > >> http://cgi.ebay.com/US-WW2-military-aircraft-radios-BC-348-P-Stromberg-1945-/250646539507?cmd=ViewItem&pt=LH_DefaultDomain_0&hash=item3a5bb2acf3 >> >> ...What was it used for? >> > >