Homepage
Crypto
Spy radio
Burst encoders
Intercept
Covert
Index
Glossary
Cameras
Recorders
Radio
Bugs
Microphones
Concealments
Lock picking
Stories
Radio
PC
Telex
People
Agencies
Manufacturers
• • • Donate • • •
Kits
Shop
News
Events
Wanted
Contact
About
Links
   Click for homepage
MN-61
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 (Latvia, USSR). 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.

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.
  
MNB-61 desktop wire recorder

With dust cover in place MNB-61 desktop wire recorder Rear view MN-61 wire recorder (top view)
A
×
A
1 / 4
With dust cover in place
A
2 / 4
MNB-61 desktop wire recorder
A
3 / 4
Rear view
A
4 / 4
MN-61 wire recorder (top view)

Documentation
  1. Magnetofon MN-61 (МН-61), Technical manual
    1984. 29 pages, with full circuit diagrams (Russian). Obtained from [2].
References
  1. Radiomuseum.org, MN-61 (MH-61)
    Page created by Zenonas Langaitis. Retrieved July 2016.

  2. ArmyMan.info, Magnetofon MN-61
    Website. Visited July 2016.
Further information
Any links shown in red are currently unavailable. If you like the information on this website, why not make a donation?
Crypto Museum. Created: Sunday 18 December 2016. Last changed: Tuesday, 13 June 2017 - 18:07 CET.
Click for homepage