Aircraft radio transmitter and receiver on top is origional untouched and did work last time I tested it without the transmitter by looping the the receive switch manualy. The transmitter is the lower unit and has been used internaly for parts is stripped but the rackmount hardware Looking for a home for all this rack fully loaded or part.including the Hammond rack tower.and the .PYE radio rack. The HP power supply on the bottom is a untouched and work last time I tubed it up see my other add for more info HP powersupply.