This particular unit was one of the later units manufactured. A few of the specs are as follows. 14 volt DC powered. Manufactured by RCA in their Camden, NJ plant. Tube Lineup: 6B8, 6C5, 6F7, 6J7, 6K7(3), 991, 41. Tube Functions: 1RF(6K7), 2RF(6K7), 1DET(6J7), HFO(6C5), VR(991), 1IF(6K7), 2IF/CWO(6F7), 3IF/2DET/AVC(6B8), OUTPUT(41). 1.5-18 mc and 200-500 kc tuning range. Please be sure to preview all of the pictures so that you can determine the condition for yourself. I do not have the proper equipment to test this piece. The item “VTG WWII RCA US Army Signal Corps BC-224-H Aircraft Tube Radio Receiver” is in sale since Friday, December 28, 2018. This item is in the category “Collectibles\Militaria\WW II (1939-45)\Original Period Items\United States\Field Gear, Equipment”. The seller is “purplepacman” and is located in Pittsboro, Indiana. This item can be shipped to United States, Canada, Bahamas.