posted on Jun, 7 2017 @ 04:33 PM
a reply to: flatbush71
I built one of these
many years ago,
still works perfectly.
Moog offers a kit,
or ready to play units.
By the way, Leon Termin who created these instruments
also built a passive bugging device that was like a mirror.
It reflected waves only when waves were directed upon it.
So, it did not produce any signal or voltage on its own.
Therefore, it was rather undetectable using the traditional
methods at the time.
One was hidden in a wooden "gift' to the U.S. embassy.
edit on 7-6-2017 by Wildmanimal because: Add