Very Rare IFI Aerospace Wideband Amplifier Model 500A (See Description) for Sale

Very Rare IFI Aerospace Wideband Amplifier Model 500A (See Description) For Sale

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Very Rare IFI Aerospace Wideband Amplifier Model 500A (See Description):
$919.97

Please message me if you have an offer or any information on this item.I can’t find this thing anywhere online. I know that some instruments from this company were used for military aerospace testing and other electronic testing. I have been told by a few that this is a traveling wave tube amp used for
RF microwave testing in industrial and aerospace installations.I plugged it in and it does seem to power on, but I don’t know how to test this. This is being sold untested as is.This piece seems to be older, I’m guessing the 60s or 70s? I am not sure. When I look online I see a few websites selling items from this brand. The prices range anywhere from $400 to nearly $100,000. I have no clue what to price this at. PLEASE SEND ME AN OFFER OR A MESSAGE IF YOU KNOW WHAT THIS IS OR WHAT IT IS WORTH.