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Scanlock is a range of Technical Surveillance Counter Measures
(TSCM) equipment, developed by
Audiotel International Ltd. in Corby (UK).
Scanlock equipment has been on the market since the late 1970s.
At the time, Audiotel was among the first companies to build bug-finding
receivers for the professional market. Over the years, Audiotel has continued
to develop new products that are sold in over 100 countries to
goverments, law enforcement agencies and TSCM professionals.
Some well-known early Audiotel products are described in this section
of the website, such as the original Scanlock Mark VB
that was also described in Keith Melton's book Ultimate Spy [1].
Later products, such as the Scanlock 2000,
the Scanlock ECM
and Audiotel's first Non-Linear Junction Detector,
the Broom are also featured here.
Cick any of the thumbnails below to read more.
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This is one of the original Scanlock receivers that were
market by Technical Security Ltd. in London, before
Audiotel was established.
The Scanlock Mark 3 was the
successor of the original Scanlock (Mark 1) and the Mark 2.
It was built in 1976.
 More information
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The Scanlock Mark VB is one of the first bug finders developed by
Audiotel, shortly after the company was established in the early 1970s.
It's a fully analog receiver that can automatically search for
hidden bugs within a room.
More information
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COMPUSCAN was an add-on to the
Scanlock Mark VB bug tracer
(shown above). It allowed a target area to be compared to
a safe zone several miles away. Any differences were then
identified as possible suspected signals.
More information
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The Scanlock 2000 is basically an improved version of the popular
Scanlock Mark VB. It is (partly) digitally controlled and has a
digital readout. Furthermore it add the ability to detect Mains
Carrier Bugs that are connected to the power line.
More information
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The Scanlock ECM is a further development of the Scanlock 2000.
The device is now fully digitally controlled and contains separate
receivers for radio frequencies (RF) and cable frequencies (CF).
Furthermore it adds the ability to check any arbitrary cable pair,
such as a telephone line or the speaker cables of the stereo, for bugs.
More information
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The Broom is a first generation Non-Linear Junction Detectors (NLJD).
It can find an electronic circuit hidden in, say, a wall, even when
it is not turned on.
More information
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Delta-V is a small hand-held differential RF detector that allows easy
bug detection in a room, in a car or on a person, without in-depth
knownledge and expertise. The device is powered by an internal 9V battery.
Although the first version of Delta-V dates back to 1989, it has been
updated and enhanced several times since, and is still available from
the manufacturer today (2013).
More information
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The TCM-03 was a device for detecting bugs on the mains power cables
and on the (analogue) telephone lines. It was introduced in 1989
and was succeeded by the TCM-03 Mark II in 1992.
The TCM-03 was sold until 2013.
More information
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It is little known that, besides bug finders, Audiotel has also
developed and manufactured a range of
surveillance radios.
These are small radio transceivers that can easily be hidden under the
operator's clothing and that were used for covert operations
and surveillance tasks.
More...
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- H. Keith Melton, Ultimate spy.
ISBN: 0-7513-4791-4, 1996-2002
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© Copyright 2009-2013, Paul Reuvers & Marc Simons. Last changed: Sunday, 04 May 2014 - 23:09 CET
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