Today I was "virtually" at the (formerly?) home of Karl: - Movie "Untraceable" from around 2008 -
and yesterday I found this MK v. 4 (from 1960) user manual - perhaps you like or can use it.
This "audio-frequency-inbalance-circuit" was state of the art in World War 2 but available til 1995 (improved).
It moved from Poland over France to United Kingdom during all these "Nazi" attacks.
and yesterday I found this MK v. 4 (from 1960) user manual - perhaps you like or can use it.
This "audio-frequency-inbalance-circuit" was state of the art in World War 2 but available til 1995 (improved).
It moved from Poland over France to United Kingdom during all these "Nazi" attacks.
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