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Desktop wire recorder
- under construction
The MN-61 (Russian: МН-61) was a desktop
audio wire recorder,
developed in 1961 by the
VILMA National Devices Factory
in Vilnius (Lithuania). 1
As the audio is recorded on to a very thin wire rather than to a tape,
it has a recording time of 5.5 hours. The device was built especially
for the security services
of the former Soviet Union (USSR).
The recorder's mechanism was made by the
Petrovskovo Works in Novgorod, and was also used in the
MS-61B cockpit voice recorder.
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With the top lid in place, the device measures 33.5 x 23.6 x 24 cm and
weights 12 kg. It is fully solid-state (i.e. no valves) and is powered
by an internal Power Supply Unit (PSU) that is suitable for the 220V AC mains
(at 50 Hz).
The MN-61 has a line input that is suitable for 0.1V or 0.01V signals. in addition it accepts signals from the output of a receiver in the 3 to 10V range. A separate microphone input with a sensitivity of 150-450 mV is also
available.
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© Crypto Museum. Created: Sunday 18 December 2016. Last changed: Friday, 05 October 2018 - 07:28 CET.
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