A teardown of the potentiometers is available in this video: https://www.youtube.com/watch?v=BmTmTx9HPlo
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https://www.youtube.com/watch?v=iWrzVnKUCDk
Critikon Dinamap teardown (includes link to the service manual):
www.eevblog.com/forum/reviews/critikon-dinamap-plus-vital-signs-monitor-tear-donw/
The Cyrano radar for Mirage IIIE:
http://www.ailesahs.com/wp/?page_id=5180
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https://www.youtube.com/watch?v=J8fgMPP3CXo