One possibly-untapped resource for test equipment is calibration labs.
Things that would have been "science fiction dreams" in the 1930s are just so much more "junk to be discarded" today. The cost to repair a 1970s Tektronix oscilloscope is probably more than anyone would be willing to pay, so there may be quite a few "wounded" 'scopes (ones that won't meet original bandwidth specs, but are more than adequate for theremin frequencies) lying dormant in cal. labs.
Also with the push for "green", there's often a disposal fee. So a cal. lab may find it cheaper to give stuff away than throwing it away.
Just a thought ...
Don
Things that would have been "science fiction dreams" in the 1930s are just so much more "junk to be discarded" today. The cost to repair a 1970s Tektronix oscilloscope is probably more than anyone would be willing to pay, so there may be quite a few "wounded" 'scopes (ones that won't meet original bandwidth specs, but are more than adequate for theremin frequencies) lying dormant in cal. labs.
Also with the push for "green", there's often a disposal fee. So a cal. lab may find it cheaper to give stuff away than throwing it away.
Just a thought ...
Don